Francine is studying the karyotype of a human subject in a medical study. she observes that the karyotype shows three copies of chromosome 21. all of the other chromosomes have two copies. which conclusion about the subject is supported by francine's observations?

Answers

Answer 1

3 copies of chromosome in karyotype shows that person has genetic disorder called down syndrome.

What do you mean by karyotype?

A karyotype test examines the structure, shape, and number of chromosomes in your body. The sections of our cells that hold your genes are called chromosomes.

Instead of having one copy of chromosome 21, an egg or sperm cell may preserve both copies. If this egg or sperm is fertilized, the baby will be born with three copies of chromosome 21. This is referred to as trisomy 21. Trisomy 21 is present in around 95% of people with Down syndrome. Instead of the usual two copies of chromosome 21, each cell in the body has three copies of chromosome 21 in this kind of Down syndrome.

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Related Questions

Which is the reason cells divide

Answers

Answer:

Cells devide because in order to meet the requirements of the body.

The body need to grow and every part of a body needs cells for their functions.

Rosalind Franklin used what technique in her study of DNA molecules?

Answers

Answer: Rosalind Franklin used X-ray crystallography in her study of the DNA Molecules.

Gram per gram, ______ provide the most calories. group of answer choices alcohol proteins lipids carbohydrates

Answers

Gram per gram, lipids provide the most calories. group of answer choices alcohol proteins lipids carbohydrates. Thus, the correct option is C.

What is lipids?

A lipid is defined as any of a number of chemical molecules that are water insoluble. They are energy-storage molecules and chemical messengers that include fats, waxes, oils, hormones, and some membrane components.

Lipids are fats that offer nine calories per gram to the body, making them the most energy-dense component of food.

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Which animal is native to a different part of the world than the other two? walrus polar bear penguin.

Answers

Penguin is an animal that is native to a different part of the world other than the other two

What is native species?

Native species refers to species of organisms that of a particular origin. They are organism found in a location where they are native to or have there origin there .

Therefore, Penguin is an animal that is native to a different part of the world other than the other two

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You are given a graduated cylinder and are asked to determine how much liquid is in the container. First, you put the cylinder on a flat surface. Wha
will you do then to get the most accurate reading?

Answers

Answer:

find the width and length?

label the structure of a plant cell ( worksheet is due after 5 days )

Answers

Answer:

Explanation:

A)Vacuole

B)Cell wall

C)Endoplasmic reticulum

D)Nucleus

E)Ribosomes (ig)

F)Chloroplasts

G)Golgi apparatus

Blood pumps through arteries due to contraction of the arterial walls but flows more freely through veins because there is little to no contraction. Based on this information, which would you expect to be present in higher quantities in arteries than in veins

Answers

Excitable cells like those found in muscle tissue are expected to be present in higher quantities in arteries than in veins.

What are Excitable cells?

Excitable cells are defined as those cells that are capable of generating electrical impulses when stimulated. Example of such cells include:

Neurons,

muscle cells( smooth, skeletal and cardiac)

Endocrine cells.

The artery is made up of higher amount of smooth muscles than the veins therefore, excitable cells like those found in muscle tissue are expected to be present in higher quantities in arteries than in veins.

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When does behavioral isolation occur?

Answers

Behavioral isolation occurs when a subset of a particular species slowly undergoes changes in its behavior ordinarily due to traveling to different geographical regions.

1. True or False - An organism may have the same common names that remain the same from area to area and language to language.
2. True or False - Scientists try to organize living things into groups that have biologic significance.
3. True or False - In binomial nomenclature, each species is assigned a single scientific name.
4. True or False - In the name Ursus maritimus, the first term of the name refers to the genus.
5. True or False - Linnaeus's system of classification uses 5 taxonomic categories.
6. True or False - Scientists often look for similar genes in similar organisms.
7. True or False - Evidence shows that the same gene that codes for a particular protein in human muscle also codes for that protein in yeasts, indicating they are the same species.
8. True or False - The kingdom Eubacteria contains the same organisms as the domain Bacteria.
9. Biologists use a classification system to group organisms in part because organisms:
10. Scientists assign each kind of organism a universally accepted name in the system known as:
11. For many species, there are often regional differences in their:
12. In taxonomy, a group at any level of organization is referred to as a:
13. In the scientific version of a species name, which of the names is capitalized?
14. The second part of a scientific name is unique to each:
15. Animals that are warm-blooded, have body hair, and produce milk for their young are grouped in the class:
16. All organisms in the kingdoms Protista, Plantae, Fungi, and Animalia are:
17. Which of the kingdoms in the six-kingdom system of classification was once grouped with plants?
18. Sometimes, organisms that are not closely related look similar because of:
19. The animals Panthera leo (lion) and _____ tigris (tiger) belong to the same genus.
20. Fill in the blank: The domain _____ is composed of the kingdom Eubacteria.
21. Fill in the blank: The use of a two-part scientific name for organisms is called _____ nomenclature.
22. Fill in the blank: In Linnaeus's system of classification, the two smallest categories are genus and _____.
23. Fill in the blank: The domain _____ contains plants, fungi, protists, and animals
24. Fill in the blank: In taxonomy, the class Mammalia is grouped with the classes Aves, Reptilia, Amphibia, and several classes of fishes into the phylum _____.
25. Fill in the blank: The most general and largest category in Linnaeus's system is the:
What is the scientific name for humans?

Answers

Answer:

1. False

2.True

3.False

4.True

5.False

6.False

7.False

8.True

9.are very numerous and diverse

10.binomial nomenclature

11.common names

12.taxon

13.The first name only

14.species in its genus

15.Mammalia

16.eukaryotes

17.Fungi

18.convergent evolution

19.Panthera

20.Bacteria

21.Binomial

22.Species

23.Eukarya

24.Chordata

25.kingdom

26.Homo sapien

Explanation:

1. It is true  that an organism may have the same common names that remain the same from area to area and language to language.

2. It is true that scientists try to organize living things into groups that have biologic significance.

3. It is true that In binomial nomenclature, each species is assigned a single scientific name.

4. It is true that in the name Ursus maritimus, the first term of the name refers to the genus.

5.  It is false that  (Linnaeus's system of classification uses 7 taxonomic categories: Kingdom, Phylum, Class, Order, Family, Genus, Species)

6. It is true that Scientists often look for similar genes in similar organisms.

7. It is  True that Evidence shows that the same gene that codes for a particular protein in human muscle also codes for that protein in yeasts, indicating they are the same species.

8.  It is True that The kingdom Eubacteria contains the same organisms as the domain Bacteria.

9. Biologists use a classification system to group organisms in part because organisms share common characteristics and evolutionary relationships.

10. Scientists assign each kind of organism a universally accepted name in the system known as binomial nomenclature.

11. For many species, there are often regional differences in their common names.

12.  In taxonomy, a group at any level of organization is referred to as a Taxon.

13.  In the scientific version of a species name,  The genus name is capitalized .

14. he second part of a scientific name is unique to each species.

15.  Animals that are warm-blooded, have body hair, and produce milk for their young are grouped in the class Mammalia.

16. All organisms in the kingdoms Protista, Plantae, Fungi, and Animalia are Eukaryotes.

17. Fungi kingdoms in the six-kingdom system of classification was once grouped with plants.

18.  Sometimes, organisms that are not closely related look similar because of Convergent evolution.

19.  The animals Panthera leo (lion) and Panthera tigris (tiger) belong to the same genus.

20.  The domain Bacteria is composed of the kingdom Eubacteria.

21. The use of a two-part scientific name for organisms is called Binomial nomenclature.

22.  In Linnaeus's system of classification, the two smallest categories are genus and Species.

23.  The domain Eukarya contains plants, fungi, protists, and animals .

24. In taxonomy, the class Mammalia is grouped with the classes Aves, Reptilia, Amphibia, and several classes of fishes into the phylum Chordata.

25. The most general and largest category in Linnaeus's system is the Kingdom.

The scientific name for humans is Homo sapiens.

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Help me pls it about cells

Answers

Plant cells and animal cells have their own different properties and structures.

What do you mean by cell?

The simplest form that can sustain life on its own and makes up all living things, including the body's tissues is called a cell.

1. Both plant cell and animal cell.

2. Plant cell

3. Eukaryotic cell

4. Plant cell

5. Plant cell

6. Plant cell

7. Animal and plant cell

8. White blood cell and amoeba

9. Both animal and plant cells.

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Which of the following is NOT an adaptation of the
parasitic tapeworm?


A. No digestive system because food is already digested.
B. Hooks to hang onto host intestine.
C. Fangs to pierce intestine wall and absorb nutrients.
D. Mucus for protection from being digested.

Answers

A, there is no need for the lack of system, it just became like that

matter that makes up the living and dead organisms in an ecosystem

a: Solutions
b: A biotic matter
c: molecules
d: biotic matter

Answers

It is biotic matter

By the end of the first week following conception, the fertilized egg now has approximately 100 cells and is known as the ____________.

Answers

Answer:

blastocyst

Explanation:

blastocyst is a rapidly dividing ball of cells.

By the end of the first week following conception, the fertilized egg now has approximately 100 cells and is known as the blastocyst.

What is cell?

Cell is defined as the base of life as it is the structural as well as functional unit of life. Cell is made up of pre existing cells and the cell contain various cell organelles such as mitochondria, endoplasmic reticulum, ribosomes, golgi appratus, nucleus, and cytoplasm.

Basically, cell is of two type one in prokaryotic and another one is eukaryotic. The prokaryotic cell is known as pre mature cells as they do not contain cell organelles and eukaryotic cell are known as advanced and developed cells as they contain several cell organelles.

The unicellular animals are made up of single cell and all the functions carried out in a single cell like amoeba and multicellular organisms are made up of multiple cells and there is specific cell for specific functions.

Therefore,by the end of the first week following conception, the fertilized egg now has approximately 100 cells and is known as the blastocyst.

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Which of the following is NOT an adaptation
that bacteria have evolved to survive
antibiotics?
A. They recognize when antibiotics enter the body and go dormant
to evade being attacked.
B. They have alternate ribosomal sites for protein synthesis.
C. They have become completely immune to the antibiotics.

Answers

They have become completely immune to the antibiotics is not an adaptation that bacteria have evolved to survive antibiotics.

What are Antibiotics?

These are substances which inhibit the growth of bacteria through different mechanisms.

This is done through mutation in which there are alternate ribosomal sites for protein synthesis or being dormant.

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Answer: A

Explanation:

Many living organisms are adapted to specific temperatures. This is an example of which characteristic of life?
a. use of energy
b. reproductive ability
c. growth and development
d. maintaining homeostasis​

Answers

Answer:

The answer is C growth and development

which one is a organic molecule .

Answers

option c is the right answer please mark me as brainlist

Answer:

Ch4 is a organic molecule.

which trophic level does the frog occupy

Answers

Answer:

third trophic level

Explanation:

third trophic level

Grasshoppers in turn are eaten by frogs, which is occupying the third trophic level. Frogs here are termed as secondary consumers.

Mushroom and yeast are called saprophytes​

Answers

Answer:

they are a fungus or plural they are a fungi or funguses

They are fun guns and that should be it

What secretion helps waste to move through the large intestine?

Answers

Answer:

I'm almost certain that it's mucus. (been a hot sec since I took a bio or anatomy class)

Explanation:

Here's a quote: "The colon secretes mucus to bind and lubricate the food waste to help it pass through smoothly as it is dehydrated." -the Cleveland Clinic

The graph shows the supply and consumption of forests when the consumption rate and population growth rate are both low.
what does the graph predict for the future? A Less air pollution.
B Forest overgrowth.
C Reduced demand.
D Resource depletion.

Answers

The graph predict resource depletion because the supply and consumption of forests when the consumption rate and population growth rate are both low.

What are the consequences of the depletion of natural resources?

The consequences of this ecological excess are increasingly evident, with imbalances such as the extinction of species, scarcity of fresh water, soil erosion, loss of biodiversity and global warming.

Reaching this limit means that all the resources used for the survival of humanity are depletion and we are in “debt” to the planet, in this case it is the graphic representation of this depletion.

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Why does cellular respiration only happen by night in plants

Answers

Answer:  The Photosynthesis process ceases.

Explanation: To explain it is simple like the plant respiration occurs 24 hours per day, but night respiration is more evident since the photosynthesis process ceases.

krebs cycle/citric acid cycle- cellular respiration that does not require the presence of light

What are the three techniques scientists can
use for correlation?

Answers

♨ANSWER♥

naturalistic observationThe survey methodArchival research

...hope this helps...

_♡_mashi_♡_

There are three types of correlational research: Naturalistic Observation, the Survey method, and Archival research.

Jada wants to eat a meal that will sustain her energy during a long run. Which of these food items is the best source of long-term energy?
grape juice
sugar cookie
baked potato
strawberries

Answers

Answer:

Baked Potato

Explanation:

since the potato contains a high amount of carbohydrates

at about 37 grams

hope this helps:)

The typing of human blood is determined by three alleles: A, B, and O. Alleles A and B are codominant to one another and O is recessive to both alleles, A and B.
AA/ AO – type A blood, AB – type AB blood, BB/ BO – type B blood, OO – type O blood.
A woman who is homozygous for type B blood marries a man who is heterozygous for type A.

What is the genotype ratio of their offspring?
What is the phenotype ratio of their offspring?

Answers

Answer:

genotype ratio = 1AB:1BO

phenotype ratio = 1 type AB blood: 1 type B blood

What kind of rna carries the amino acids to the ribosome?.

Answers

Answer:

TRNA.

Explanation:

Transfer RNA carries the amino acid to the ribosome during protein synthesis.

What is the name of the green pigment molecule in plants that absorbs solar energy during photosynthesis?
No links please.

Answers

Answer:

Chlorophyll

Explanation:

chlorophyll is a photosynthetic green pigment that are found in mostly plants and algae, and they help plants absorb energy from the sun. they can be found in the chloroplast.

Answer: chlorophyll

Explanation:

Thats what makes plants mostly green.

Most bacterial infections are treated with antibiotics that is commonly available at public hospitals.

TRUE OR FALSE?


PLEASE STATE WHETHER THE STATEMENT ABOVE IS TRUE OR NOT, TY.

Answers

Answer:

The statement is true

Which two statements indicate that Lizzie is avoiding plagiarism

Answers

Answer:

She puts the statement in quotation marks and includes the name of the source's author. At the end of her presentation, she includes a works cited slide to give credit to all the books, magazines, and websites she read while preparing her presentation.

Explanation:

These both show how she avoids plagiarism because she uses quotation marks to show that the sentence doesn't belong to her. She also cites at the end so that people who have the information she uses to get their credit.

From 2007 to 2010, the mink population stayed fairly consistent, but in 2010, the population dramatically decreased. Which of the following could describe what happened to the population of minks?

The mink population ran out of space to live so many died

A catastrophic event occurred like a disease or big natural disaster that quickly wiped out a large number of mink.

There were more voles for the mink to eat, so their population increased

The bears began to eat the mink in 2010 so the population of minks decreased.

Answers

The most likely event that led to a sudden decrease in the population of mink in 2010 would be a catastrophic event. The correct option would be B.

Decrease in population

A sudden and sharp decrease in the population of an organism can be caused by a host of factors. These include:

catastrophic events such as disease outbreaks, natural disasters, famine, etc. a sudden appearance of predators in the environment

If the predator has always been in the environment with the population of the organism, this will not result in a sharp decline in the population. A population of predators suddenly joining the environment may be the only cause for a sharp decline in the population of the organism.

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Which type of scientific statement is defined as a statement of fact that is generally accepted to be true and universal
because it has always been observed to be true?
O theory
O probability
Olaw
Ohypothesis

Answers

I think it's theory

Please give brainliest

A scientific law is a factual claim that is commonly acknowledged to be true or universal because it has consistently been seen to be true.

Thus, Only a law among the alternatives is acknowledged as being universal.

After several years of experiments, a finding is recognized as a law. It must demonstrate its universality in order to be regarded as such at any time and in any location on Earth.

A theory is merely the best explanation for a fact, and it can be abandoned when a better one emerges. As a result, it is impossible to predict how long a theory will last.

Thus, A scientific law is a factual claim that is commonly acknowledged to be true or universal because it has consistently been seen to be true.

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