Answer:
- 002 .45 2.71 3.84 6.64 10.83
2 0.02 0.21 1.39 4.61 5.99 9.21 13.82
3 0.11 0.58 2.37 6.25 7.81 11.35 16.25
4 0.30 1.03 3.36 7.78 9.49 13.28 18.
Explanation:
From the test cross and X² test, I assume the individual is dihybrid and genes are in separate chromosomes. 1)25 aB. 2)X²=2. 3)P₀.₀₅=7.81. 4)Accept the model.
What is a test cross?A test cross is a cross we use to determine the genotype of individuals whose phenotype we already recognize.
The cross occurs between the individual of an unknown genotype and a recessive h0m0zygous individual. We want to know if the unknown genotype is heter0zyg0us or h0m0zyg0us dominant for a single gene.
Considering only one gene involved in the cross,
if the individual is heter0zyg0us, the progeny will be 50% heter0zyg0te and 50% h0m0zyg0te expressing the recessive trait.The phenotypic and genotypic ratio is 1:1
if the individual is h0m0zyg0us dominant, the whole progeny will be heter0zyg0us.Considering two genes that assort independently are test crossed,
If the individual is a dihybrid -heter0zyg0us for both genes-, the progeny will express equal phenotypic and genotypic ratio, 1:1:1:1.If more than one gene are involved, we can also determine if these genes assort independently, or if they are linked.
If genes are located in different chromosomes or are far from each other in the same chromosome, they assort independently, and their phenotypic and genotypic ratios are 1:1:1:1If these genes are linked, after the test cross, the distribution of phenotypes among the progeny differs from 1:1:1:1.When phenotypes appear in different proportions than the expected ones, we can assume that these genes are linked.
However, the difference between the observed and the expected data can be by random chance. This means that genes could assort independently, but by chance, the observed ratios vary from the expected ones.
To analyze these situations and determine is the difference is by chance or because genes are linked, we need to perform a chi-square test.
---------------------
Now, let us answer the question.
Available data:
Test cross
F1 = 100 individuals
AB 22 Ab 28 aB 29 ab 211) What expected number would you use for the aB class?
To answer this question, we assume genes assort independently, so if this is the case, genotypic ratio should be 1:1:1:1, or 25% AB : 25% aB : 25% Ab : 25% ab
100% ------------- 100 individuals
25% -------------X = (25% x 100) / 100% = 25 individuals AB
25% -------------X = (25% x 100) / 100% = 25 individuals aB
25% -------------X = (25% x 100) / 100% = 25 individuals Ab
25% -------------X = (25% x 100) / 100% = 25 individuals ab
So, accordig to our calculations, the expected number for the aB class is 25 individuals.
----------------------------
2) Calculate the chi-square value.
Model: dihybrid test cross of two genes on separate chromosomes -assort independently-.
AB Ab aB ab
Observed, O 22 28 29 21
Expected, E 25 25 25 25
(O-E)² / E 0.36 0.36 0.64 0.64
X² = Σ(Obs-Exp)²/Exp = 0.36 + 0.36 + 0.64 + 0.64 = 2
X² = 2
The chi-square value is X² = 2
-------------------------
3) Determine the probability that the model would give the observed data.
Freedom degrees = n - 1 Where n is the number of classes ⇒ 4.
Freedom degrees = 4 - 1 = 3
Significance level = 0.05
Conventionally, we use 0.05 = 5% as the significance level.
Critical value (table value) = 7.81
Considering a significance level of 0.05 and 3 freedom degrees, the critical value equals 7.81.
--------------------------
4) would you accept or reject your model?
X² = 2P₀.₀₅ = 7.81X² < P₀.₀₅ ⇒ 2 < 7.81
p value is greater than X², so there is not enough evidence to reject the null hypothesis. The ungenotype might be a dihybrid, and there might be independent assortment.
I would accept the model.
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On topographic maps, how do you represent a steep slope?
A. Contour lines that are closely spaced
B. Contour lines that are dashed or dotted
C. A lack of contour lines
D. Contour lines that are far apart
Answer:
Contour lines that are closely spaced(Apex Approve)
Explanation:
On a topographic map the amount of elevation change is related to the number of contour lines. Using the same contour interval, the more contour lines over the same distance indicates a steeper slope. As a result, areas of a map where the contour lines are close together indicate steeper slopes
If you have a vloume of 55l and a density of 2kg/l what is the mass
Answer:
110 kg
Explanation:
Density = Mass / Volume ===> Mass = Density x Volume
Now follow the given:
- Density = 2 kg/L or 2000 g/L
- Volume = 55 L
Apply the rule:
Mass = 55 L x 2 kg/L = 110 kg or 110000 g. ( Liters is cancelled by Liters).
Which has the most direct impact on evaporation in the water cycle?
O A. pollution
O B. temperature
O c. deforestation
O D. ozone depletion
Answer:
O D. ozone depletion.
Explanation:
O D. ozone depletion
A scientist wishes to represent the location of an earthquake in California. Which type of model is most appropriate for this purpose?
Answer:
Seismograph?
Explanation:
If an earthquake happens, seismologists use seismic waves that are detected with seismographs, to locate the epicenter of an earthquake, and also to estimate the strength and duration of the earthquake
What is the a simple heart central conflict?
Answer:
The central conflict in the book by Gustave Flaubert speaks to the inability of the housemaid to (after the death of her mistress) love (that is care for) herself when ironically she had given all her heart in the devotion to same.
Explanation:
Félicité -the housemaid is a characterised as a simple-minded, woman who although loyal to a fault suffers tremendous loss the loss is mostly psychological.
She is unable to bring herself to live a life outside the one which she had with her mistress. So as the very house where she and her mistress lived decays, so does her condition worsen.
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What conclusion is best supported by the selection above ? NUMBER 2
Define structuralism and functionalism and explain their similarities and differences.
Answer:-Structuralism is the field concerned with discovering the basic elements of consciousness and...
-Functionalism is the field concerned with how mental processes help organisms adapt to their environment.
-Wilhelm Wundt established structuralism; he broke down consciousness into its two basic elements- subjective feelings and objective sensations.
-William James established functionalism; James disagreed with the functionalists and believed that consciousness couldn't be broken down as structuralists believed because it was a continuous stream of consciousness.
-Similarities are that subjective feelings and objective sensations are included in a continuous stream of consciousness as well as many other things. Organisms can adapt to their environment by using their subjective feelings and objective sensations and thoughts in order to solve problems that occur in their environment.
Which is the correct chemical equation for photosynthesis? 6CO2 + 6H2O ® C6H12O6 + 6O2 C6H12O6 + 6O2 ® 6CO2 + 6H2O 3CO2 + 3H2O + 3O2® C6H12O6 6O2 + 6H2O ® C6H12O6 + 6CO2
Answer:
[See Below]
Explanation:
Here's the equations for photosynthesis.
~Hope this helps Mate. If you need anything feel free to message me.
The eqation which reporesent Photosynthesis is 6CO2 + 6H2O ® C6H12O6 + 6O2
Photosynthesis is the process by which green plants manufacture their food(in form of sugar) using carbon dioxide and water in the presence of sunlight. This is possible because of the presence of chlorophyll which creates a medium to absorb the sun's energy. The Light energy formed then converts water and carbon dioxide into oxygen and sugars.
The chemical equation to represent the process is as follows
6CO2 + 6H2O ------> C6H12O6 + 6O2.
sunlight
Here, six molecules of carbon dioxide and six molecules of water reacts in the presence of light energy captured by chlorophyll from the sun to form sugar and six molecules of oxygen.
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what part of the brain is labeled c in the diagram
Answer:
What diagram my guy
Explanation:
Theres no diagram
The part of the brain is labeled c in the diagram is forebrain which has been represented in the diagram.
Which part of the brain is more linguistic?In comparison to the right brain, the left brain is more linguistic, analytical, and organized. It is often referred to as the digital brain. It performs tasks like reading, writing, and calculations better.
According to the hypothesis, persons who are left-brain dominant perform best in occupations that require verbal, mathematical, and linear thinking, such as that of an accountant, scientist, or computer programmer.
Children that use their left brain more effectively tend to think more analytically and do academically well. They might be very good at memorizing enormous quantities of information, have a large vocabulary, and pay close attention to detail.
Therefore, The part of the brain is labeled c in the diagram is forebrain which has been represented in the diagram.
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Use the drop-down menus to complete each sentence.
are organisms that contain more than one cell with membrane-bound organelles and a nucleus.
Organisms that contain only one cell and do not contain a nucleus or membrane-bound organelles are known as
Answer:
✔ Eukaryotes
are organisms that contain more than one cell with membrane-bound organelles and a nucleus.
Organisms that contain only one cell and do not contain a nucleus or membrane-bound organelles are known as
✔ prokaryotes
Explanation:
1. Eukaryote
2. Prokaryote
Through which conversion is energy released?
ADP to ATP
ATP to ADP
NADP+ to NADPH
CO2 and H2O to C6H12O6 and O2
Answer:
B. ATP to ADP
Explanation:
Just took the quiz on e2020
Answer:
B :)
Explanation:
just took the test
Roses attract more pollinators than tulips
Answer:
Pollinators are such as bees, insects, moths etc. that help in pollination of flowers.
Explanation:
When we heard about the pollinator we always think that theses are bees. Bees are very important in pollination of the plant. Pollinators are the insects that take some pollen from one flower to another flower and the procedure takes place for further.
These flowers attracts bees, insects, butterflies, bats moth and small mammals. Rose color and its tempt with fragrance attracts insects and bees. There are variety of flowers that attracts pollen but rose attract more because of fragrance and its color.
Help! Read the question!
Answer:
the answer is c
Explanation:
:3 np i was glade to help
Nucleic Acids make up DNA. DNA, in turn, is used as a blueprint to make
Answer:
I believe its RNA
Explanation:
RNA is the new copy of DNA
Nucleic Acids make up DNA. DNA, in turn, is used as a blueprint to make RNA.
What is DNA?Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid.
The DNA of an individual can be found in almost all of their cells. DNA contains the bases adenine (A), cytosine (C), guanine (G), and thymine (T) (T).
All biological cells contain ribonucleic acid (RNA), a crucial biological macromolecule.
It plays a major role in the production of proteins by acting as a messenger for DNA, which in turn carries the genetic instructions necessary for life's growth and maintenance.
The DNA blueprint is first transcribed into RNA, another large macromolecule, to generate proteins.
To create proteins, ribosomes receive the exported RNA from the cell nucleus. The RNA sequence is read by ribosomes, which then use it as a template to make new protein molecules.
Thus, RNA is the molecule made from the blueprint of DNA.
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what is microsporangium
Answer:
microsporangium are sporangia that produce microspores and give rise to male gametes
Explanation:
When a lizard eats and insect, it is considered _____________ .
Group of answer choices
Predation
Mutualism
Parasitism
Commensalism
Answer:
predation
Explanation:
the lizard is acting as a predator to the insect
Anytime you speculate about a problem and think of an answer based on what you
see on TV or read on the Internet, you are forming a scientific theory.
a. True
b. False
Answer:
b. False
Explanation:
A scientific theory must have strong support from testable facts that are confirmed (or rejected) by observational and/or experimental procedures. The scientific method is a rigorous process that consists of arising a conjecture (hypothesis) which can be subsequently used to make predictions from its logical consequences, and finally to obtain information from empirical observations/experiments in order to obtain a conclusion about the veracity of the scientific claims (i.e., a hypothesis must be testable). In consequence, a scientific theory can not be based only on 'light' conjectures, but trustworthy observational data from the real world.
What’s the difference with prokaryotes and eukaryotes and how are they the same?
Which amino acids have side chains that fit into the specificity pocket of chymotrypsin?
Answer:
The aromatic amino acids; Phenylalanine, Tryptophan, Tyrosine
Amino acids with bulky side chains; Leucine and Methionine
Explanation:
Chymotrypsin is a member of the serine proteases, which is family of enzymes that hydrolyze peptide bonds through the action of an active site serine.
Chymotrypsin cleaves peptide bonds on the C-terminal of aromatic amino acids or amino acids with bulky hydrophobic sides chains such as phenylalanine, tyrosine and tryptophan, leucine and methionine. This specificity for aromatic amino acids is due to its large hydrophobic pocket and due to the complementary nature of these amino acids when they bind to the pocket.
To unlock the fifth wheel, pull the release handle to the________ position.
Answer:
The correct answer is "open".
Explanation:
The fifth wheel is an element that couples a heavy-duty pickup truck and a camping trailer. To unlock the fifth wheel it is necessary to pull the release handle to the open position. In the open position of the release handle the fifth wheel is unlocked, which allows to uncouple the heavy-duty pickup truck and the camping trailer
In the presentation of their findings, the authors of the Metabo-Herb study _______.a. Clearly state the limitations of their studyb. Relate the results of their study to previous work in the fieldc. Suggest additional research that may help clarify the effectiveness of fertilizersd. Provide a detailed description of the study site including physical and biologicalfeaturese. depart from scientific convention by characterizing the results of their study as‘proving’ their hypothesis.
Answer:
The correct answer is E) the authors of the Metabo-Herb Study depart from scientific convention by characterizing the results of their study as ‘proving’ their hypothesis.
Explanation:
Scientific convention refers to the meeting or gathering of scientists with similar interests to agree on a collective way of pursuing, addressing, or approaching a set of agreed activities.
In order words, is an agreed way of doing things by a group of scientists with similar interests.
In relation to the question, there is a scientific convention with respect to experiments and the presentation of scientific studies. The scientific convention requires that figures, formulae, units, and data (graphs, diagrams, tables) must be included in the presentation of studies for other scientists to also verify before a study can be accepted as having proven its hypothesis.
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Sample Question:
The different properties and functions of carbohydrates, and other biological molecules, is due to
what?
A.
Their structures.
B.
Where they are found.
C.
They are inorganic molecules.
D.
Their bonds.
Answer:
d. Their bonds
Explanation:
Answer:
Their bonds
Explanation:
Which contributes to the polarity of a water molecule?
Anything that occupies space and takes up mass
Answer:
Matter
Explanation:
Matter consist of tiny and discrete particles
Explanation:
Hey there!!
The answer is matter.
We simply define matter as anything which occupies space, has some mass.
Hope it helps...
Fats are major components of the cell’s ____. a. membranes b. cytoplasm c. DNA d. ribosomes e. proteins
Answer:
membranes
Explanation:
What type of organic substances are fats
What is the difference between mitosis, and meiosis?
Answer:
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells. Below we highlight the keys differences and similarities between the two types of cell division.
Explanation:
Define the term, Stratigraphy. identifying landofrms graph keeping the record of smal microbes measures eaerthquake vibrations process of describing the patterns in which rock layers are deposited.
Answer:
Process of describing the patterns in which rock layers are deposited.
Explanation:
Stratigraphy is a field of earth sciences that studies the sequence of consecutive rock layers (stratification), with the aim of dating and describe the characteristics of the soil.
Stratigraphy is used to determine the paleogeography of an area. It also plays an important role in archaeological, paleoclimatic and paleontological research, where it is important to know from which layer a particular object, fossil or data originates and to which age it corresponds.
If I put 1 mole of substance A and 2 moles of substance B into 1 liter of water, which
of the following best describes what I have made?
A. 3M solution
B. This is impossible to calculate with 2 solutes
C. moles can't be put in water or they will drown
D. 1M substance A and 2M substance B solution
Answer:
c.moles can't be put in water or they will drown
Explanation:
what layer of skin contains the stem cells that cause fingernail growth
Answer:
A nail grows from a deep layer of living epidermal tissues, called the nail matrix, at the proximal end of the nail. Stem cells in the nail matrix keep dividing to allow nail growth, forming first the nail root and then the nail plate as the nail continues to grow longer and emerges from the epidermis
Hope this helps
Answer:
nail matrix
Explanation:
it is found at the proximal end, and it contains stem cells, which form keratinocytes( which make up the nail)