Biology I Mid-Year-Assessment (2020-2021)
In hamsters, black fur (B) and white fur (W) are co-dominant. A scientist finds a record of offspring for a mated pair of
hamsters. The record shows 50% of the offspring had black and white fur and 50% of the offspring had white fur. None of
the offspring had black fur only. Which parental cross was most likely responsible for the percentages of offspring fur color
the scientist found?
A. BW x WW
B. BW x BW
C. BB x WW
D. BW x BB

Answers

Answer 1

Answer:A. BW x BB

Explanation:

Answer 2

The parental cross that was most likely responsible for the percentages of offspring fur color, the scientist found, BW x WW. The correct option is A.

What is crossing?

The exchange of genetic material between non-sister chromatids of homologous chromosomes occurs during crossing over, an enzyme-mediated process. It happens during meiotic prophase I's pachytene stage.

When chromosomes of the same type are paired together during meiosis, a biological event called crossing over takes place.

Parts of the chromosome can be exchanged when two chromosomes, one from the mother and one from the father, line up. The same genes may be present on the two chromosomes in different versions.

Therefore, the correct option is A. BW x WW is the result of the crossing over of offspring for a mated pair of hamsters.

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Related Questions

estimate the length of time that it took for CO 2 to from 200 300 ppm

Answers

answer:

it took 17,000 years for CO2 to go from 200 to 300 ppm.

-- please mark the brainliest and click the thanks button if correct :)

how do ships float in water​

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The air that is inside a ship is much less dense than water. That's what keeps it floating! ... As a ship is set in water, it pushes down and displaces an amount of water equal to its weight

The passion flower shown below is a long vine that grows along fences and woods. These plants have tendrils-- slender, coiling, modified stem structures-- that serve the plant by--

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Answer:

Explanation:

The answer is A

Answer:

A

Explanation:

i think sorry iim wrong

what does a graphic show

Answers

Answer:

Infographics are: "graphic visual representations of information, data, or knowledge intended to present information quickly and clearly". This basically means that infographics show complex info in colorful and easy-to-read ways.

Explanation:

Which of the following is an example of an Si unit? A)foot B) Second C) Pound D) gallon

Answers

I believe the answer is A) Foot

your lungs are ____ to your spinal column.

a. posterior
b. lateral
c. inferior
d. anterior

Answers

I Think the answer is B-Lateral

The lungs are usually posterior to the spinal column. The correct option is a.

What is the meaning of anatomical positions?

Anatomical position, also renowned as standard anatomical position, implies to the body's position when it is standing and facing forward, with each of the arms hanging on side of the body along with palms facing forward.

The legs are parallel, with the feet flat on the floor and forward facing.

The lungs are basically two spongy, air-filled organs that are located on side of the chest in thorax. The trachea or windpipe transports inhaled air to the lungs via tubular branches known as bronchi.

It is attached to the sternum anteriorly and the vertebra posteriorly. The diaphragmatic surface (base) is concave and rests on the diaphragmatic dome; the right dome is also higher than the left dome due to the presence of the liver.

Thus, the correct option is a.

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How much energy is gained during vaporization

Answers

Answer:

Explanation:

energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure. Water can evaporate at temperatures below the boiling

Answer:

Explanation:

energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure. Water can evaporate at temperatures below the boiling…

I need help ASPPPPP!!!!

Answers

Answer:

sorry dude I also need this answer

Explanation:

please let me know if you get it

What is the weigh of the air that is pressing down on us at sea level, in pounds per square inch ?

Answers

Answer:

Así como el agua del mar tiene un peso que actúa sobre los seres que lo habitan, también lo tiene el océano de aire que hay por encima de nosotros. Cargamos sobre nuestras espaldas casi una tonelada de aire, pero no lo notamos porque nos sostiene en pie una presión atmosférica equivalente, que se ejerce en todas direcciones.

La presión media del aire al nivel del mar es de 1.03 kilogramos por centímetro cuadrado. Esta presión disminuye rápidamente al aumentar la altura: a 3,000 metros se reduce a unos 0.7 kilogramos por centímetro cuadrado y a 8,800 metros, la altura del monte Everest, la presión es sólo de 0.316 kilogramos por centímetro cuadrado. (El aire es tan tenue en estas altitudes que los alpinistas tienen que llevar suministro de oxígeno.

Explanation:

Plz help me this is a big grade

Answers

Answer:

Point X

Explanation:

This is when the ball is at it's highest point.

Answer:

X

Explanation:

Which list below correctly identifies the phases of mitosis in order from start to finish?

A. prophase, metaphase, anaphase, and telophase
B. anaphase, telophase, metaphase, and prophase
C. prophase, anaphase, telophase, and metaphase

Answers

Answer:

A. prophase, metaphase, anaphase, and telophase

Explanation:

Answer:

A. Prophase metaphase, anaphase, telophase

The diploid number of chromosomes in the mustard plant, Arabidopsis thaliana, is 10. Knowing this, answer the following questions about the stages of mitosis. Part APart complete How many chromosomes will be found in each cell during prophase

Answers

Answer:

10 chromosomes

Explanation:

Ten (10) chromosomes would be found in each cell of Arabidopsis thaliana during prophase.

The prophase stage represents the first stage of the mitotic division immediately after the interphase. A diploid cell has 2n number of chromosomes and the ploidy level of a cell remains intact throughout the interphase to the prophase stage of mitosis.

At the prophase, the chromosomes of a cell only condense and become visible under the microscope. Each chromosome is seen as being consisting of two sister chromatids joined together by a structure known as the centromere.

Hence, the number of chromosomes in the cells of Arabidopsis thaliana would remain the same even at the prophase stage of mitosis.

All cells and many subcellular structures are surrounded by a membrane. Assuming a typical membrane to be about 8 nm wide, how many such membranes would have to be aligned side by side before the structure could be seen with the light microscope

Answers

Answer:

25 membranes

Explanation:

A light microscope makes it possible for the scientist to view and visualize structures with a minimum of 200 nm in diameter. So, if a typical membrane is about 8 nm wide, then we can divide the minimum diameter with the given width of the typical membrane to determine the number of membranes.

SO;

[tex]= \dfrac{200 \ nm}{8 \ nm / membranes}[/tex]

= 25 membranes

So, in a light microscope, there are about 25 membranes that will align side by side to view the structure.

Elodia is a plant that lives in water. Like all plants, elodea can make its own food via photosynthesis. Oxygen is a gas produced during photosynthesis. Photosynthesis can only happen in the presence of light. To measure the rate of photosynthesis, a piece of elodia can be placed in an inverted test tube filled with sodium bicarbonate solution. Oxygen gas produced by photosynthesis will collect at the top of the tube. The experimental set up created by a student is shown above. What is the dependent variable in this experiment?

Answers

Answer:

Photosynthesis is the only dependent variable

Explanation:

oxygen is a gas produced by photosynthesis

Answer

sskskskskskskskskskskskskskskks

and i oooopppppp

Explanation:

Four students are trying to cram for an exam they forgot to study forAfter digging through her backpack Emma finds the image below that she quickly realizes she forgot to label

Answers

Answer:

Tyrone

Explanation:

Transcription comes before translation

Select Subject B from the SIMULATION pane. Complete subject B’s karyotype. Take a snapshot of the completed karyotype, paste it into your document, and label it. Examine the karyotype. Is Subject B a male or female? _____________________________¬ How do you know? _________________________________________________________

Answers

Note about the question:

In the GIZMO program, you will be provided with 46 chromosomes that are not paired nor in order (box superior-right). According to the chromosome image shown below, you need to look for the correct chromosomes, pair them with their homologous, and place them in their correct spot to complete the karyotype.

Answer:

Subject B sex: FemaleJustification: The last pair of chromosomes are equally large, meaning that they are two X chromosomes (XX).

Explanation:

Note: You will find the complete karyotype in the attached files.

A human cell has 46 chromosomes or 23 pairs of homologous chromosomes. 22 of them are somatic chromosomes or not-sex chromosomes. The last pair, number 23, is the only sex pair.    

To know if an individual is a male or a female, you just need to see the last pair of chromosomes. Pair 23 is the sex pair.

Male: The pair is formed of a short chromosome (which corresponds to Y from the male parent) and a large chromosome (which corresponds to X from the female parent)---> XYFemale: The pair is formed of two equally large chromosomes. Each of them corresponds to X, one from the male parent and the other from the female parent). ----> XX

How many grams of carbohydrate are in 2 cups of fruit juice ,1 cup of raw spinach,and 1 cup of mashed potatoes?

Answers

Answer:

Explanation:

According to a quick online search we can say that the items listed in the question have the following grams of carbohydates each.

2 cups of Fruit Juice which contains 498 grams would have a total of 66 grams of carbohydrates

1 cup of raw spinach only contains 1 gram of carbohydrates while its cooked counterpart would contain 7 grams per cup.

1 cup of mashed potatoes weighing a 242 grams would have a total of 35 grams of carbohydrates

HELP PLEASE DO THE WHOLE PAGE

Answers

Answer:

'krf'klmf

Explanation:

lkn4f4klng

Girl no that’s to much

true or false? Both speed and acceleration include the
direction of an object's motion.

Answers

Answer:

True

Explanation:

Hope this helps:)

To solve this, we must be knowing each and every concept related to speed, acceleration and its calculation. Therefore, the given statement is false.

What is speed?

Speed may be defined as the distance traveled by an item in the amount of time it requires to travel that distance. In other words, it measures how rapidly an item travels but does not provide direction. The term "velocity" refers to the combination of direction and speed.

Acceleration is defined by the rate at which an object's velocity changes with respect to time. When an object's velocity changes, it is referred to as accelerating or to have acceleration. Speed does not include the direction of an object's motion. Acceleration include the direction of an object's motion.

Therefore, the given statement is false.

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Hello, if you cod answer this it would be very much appreciated.

Answers

Answer:

I know that it cant be A,B,C. D is close but it seams that it also slightly getting dryer, so i think that I would go with OTHER.

Other: It fluctuates between wet and dry

Drag the terms on the left to the appropriate blanks on the right to complete the sentences. ResetHelp Enzymes speed up chemical reactions by lowering the , which allows the reaction to proceed much more quickly. The between an active site and its substrate often strains bonds and helps the reaction proceed. Lactose takes years to break down on its own. But if exposed to the protein lactase, the reaction proceeds very quickly, while lactase itself remains unchanged. Lactase is an example of a(n) . A(n) is a molecule that can bind to an enzyme and prevent the enzyme from working. High temperatures or changes in pH can an enzyme, causing it to lose its shape and biological activity.

Answers

Answer:

denature

activation energy

catalyst

induced fit

inhibitor

substrate; product

active site

enzyme

Note: The question is incomplete. The complete question is found in the attachment below.

Explanation:

High temperatures or changes in pH can denature an enzyme, causing it to lose its shape and activity.

Enzymes speed up chemical reactions by lowering the activation energy which allows the reaction to proceed much more quickly.

An enzyme is considered a(n) catalyst because it speeds up a chemical reaction without being used up.

The induced fit between an active site and its substrate often strains bonds and helps the reaction proceed.

A(n) inhibitor is a molecule that can bind to an enzyme and prevent the enzyme from working.

During an enzymatic reaction, a molecule of substrate binds to the enzyme and is broken down into one or more molecules of product which are released.

The specific location within an enzyme molecule where the substrate binds is called the active site.

Lactose takes years to break down on its own. But if exposed to the protein lactase, the reaction proceeds very quickly, while lactase itself remains unchanged. Lactase is an example of a(n) enzyme.

unlike eukaryotes prokaryotes do not contain a system of internal membranes. Any organelles, proteins, and genetic material are free - floating within the cytosol. Select the description below that correctly identifies how protein synthesis differs in prokaryotic and eukaryotic cells as a result of eukaryotic compartmentalization.

A. RNA processing occurs outside of the nuclear membrane in prokaryotes and inside it in eukaryotes.

B. Translation can occur before transcription in a prokaryote but not in a eukaryote.

C. Transcription and translation can occur simultaneously in a prokaryote but not in a eukaryote.

D. Ribosomes are needed for translation of mRNA in eukaryotes, but they are not needed in prokaryotes.

Answers

Answer:

The difference in protein synthesis in prokaryotic and eukaryotic cells, due to the compartmentalization of the latter, is that transcription and translation can occur simultaneously in a prokaryote but not in a eukaryote (option C).

Explanation:

Eukaryotic cells are characterized by a true nucleus, surrounded by a nuclear membrane. Since transcription occurs in the nucleus and translation for protein synthesis occurs in the cytoplasm, the former process occurs before the latter.

In prokaryotic cells the absence of a nucleus and compartmentalization system makes it possible for transcription of DNA into RNA and translation to occur simultaneously.

The other options are not correct because:

    A. RNA processing, in both prokaryotes and eukaryotes, occurs in the cytoplasm.

    B. Transcription precedes translation in all organisms.

    D. Ribosomes are present and are necessary for protein synthesis in both prokaryotes and eukaryotes.

. Which statement best describes arteries? A. They have thick walls and transport blood away from the heart. B. They have thick walls and transport blood toward the heart. C. They have thin walls and transport blood away from the heart. D. They have thin walls and transport blood toward the heart.​

Answers

Answer:answer is 1

Explanation:

because i’m like that and i know

Lipase catalyzes the reaction to break fat molecules down into fatty acids and glycerol. Lipase would best be described as:

A) An enzyme

B) A lipid

C) A chemical reaction

D) A substrate

**WILL GIVE BRAINLIEST**

Answers

A) An Enzyme

A lipase is any enzyme that catalyzes lipids.

Lipase catalyzes the reaction to break fat molecules down into fatty acids and glycerol. Lipase would best be described as an enzyme. The correct option is a.

What is lipase?

Lipase is an enzyme that breaks fat molecules into fatty acids. Lipase is an enzyme that can be identified by 'ase' word at every end of the enzyme ase word is added.

Enzymes are biocatalyst that catalyzes biological reactions and increase the rate of reaction. They are various enzymes present in our body that cut down the molecules into simpler forms. Lipase enzyme is produced in the mouth, pancreas, and stomach.

Lipase is a type of digestive enzyme and is also called digestive juice. It digests many fats inside the body.

Therefore, the option is a) An enzyme.

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purple said chemical bonds
dark green said covalent ​

Answers

Answer:

mmmmmmmmmmmmmmmmm

A student observes a cell moving quickly through the water on a microscope slide. Which structure most directly creates energy for the cell to move?
O cell wall
chloroplast
O mitochondria
nucleus

Answers

mitochondria i'm guessing

True or false:Winds are named by the direction they come from.

Answers

Pretty sure that’s false

ANSWER:

TRUE.

Explanation: Because winds are named from the direction in which they originate, these winds are called prevailing westerlies.

Which example describes an abiotic factor interacting with a biotic factor?
A.more light increases the water temperature
B. High water temperatures decrease oxygen consecration in the water
C.Tropical fish need warn water to survive
D. Small fish are food for larger fish

Answers

Answer:

C:

Explanation:

Abiotic component is warm water

Biotic(living) is the tropical fish

C is the only one that makes sense abiotic: warm water abiotic :
Tropical fish

Elements differ based on the number of _________.

Answers

Electrons in the outer layer

Answer:

protons

Explanation:

The number of protons in an atom is the defining feature of an atom. It's what makes one element different from another. The number of protons in an atom is called its atomic number. Oxygen atoms have 8 protons.

What allows cytokinesis to occur?


Synthesis of new phospholipids



Proteins similar to those in muscles



Chromosomes unpacking



Polymerase elongating the new DNA strand

Answers

Answer:

Cytokinesis is initiated in prophase when a cytoskeleton of actin filaments and microtubules forms around the cell. This band is known as the preprophase band, and will later determine the positioning of the cell plate.

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