Genetics & Heredity

1. How do the Punnett squares for a monohybrid cross and a dihybrid cross differ?


2. What are the genotypes of gametes of an AaBb self-pollination?


3. Mendel carried out a dihybrid cross to examine the inheritance of the characteristics for seed color and seed shape. The dominant allele for yellow seed color is Y, and the recessive allele for green color is y. The dominant allele for round seeds is R, and the recessive allele for a wrinkled shape is r. The two plants that were crossed were F1 dihybrids RrYy. Identify the ratios of traits that Mendel observed in the F2 generation. Create a Punnett square to help you answer the question.

Answers

Answer 1

Answer:Biologists use a diagram called a Punnett square, to help predict the probable inheritance of alleles in different crosses.

There are four possible combinations of gametes for the AaBb parent. Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele. Both parents produce 25% each of AB, Ab, aB, and ab.

The last one I can't answer sorry.

Explanation:

hope this is good.


Related Questions

How are seatbelts related to inertia? Write you answer in complete sentences.
I need answer asap!!!

Answers

Answer:

Inertia- the tendency of an object to resist a change in velocity

Explanation:

Say a car was going at 65 MPH, but suddenly stopped. For all of the people in that car, their bodies would keep moving forward at 65 MPH until stopped by an equal force (say, the thing right in front of each person) The seatbelt is there to protect you from your own inertia.

Answer:

inertia is the constant state of movement so seatbelts stop that when you stop the car.

BEAKER 4
What substance will show net
movement into the cell?

What substance will show net
movement out of the cell?

Does the cell shrink or swell?
Benedict's reagent tests for the
presence of glucose. If this
reagent was added to the water
in the beaker after 2 hours,
what would the result be?
Why?
1% starch, 5% glucose 94% water
This diagram shows the cell in
a
solution. (hypotonic,
hypertonic, or isotonic)

Answers

Answer:

more glucose and change to a blacky-purple colour

Explanation:

The substance will show net movement out of the cell more glucose and change to a black to purple color.

What are the types of cell?

The organisms which are made up of single cell has been known as the unicellular organisms and in the unicellular organism all the life processes takes place in a single cell. Amoeba has been known as an unicellular organism in which all the activities has to be related to the life carried out in a single cell.

Multicellular organisms are made up of the eukaryotic cell and the eukaryotic cell is consist of different cell organelles to carry out different functions in the cell. The multicellular organisms perform different life process in different cells because they have specific cell for specific function.

The unicellular organisms are made of one cell and carry out the processes of life as a single cell and the multicellular organisms are made up of two or more cells that have specific functions to contribute to the life processes.

Therefore, The substance will show net movement out of the cell more glucose and change to a black to purple color.

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How does the Coriolis effect impact the Gulf Stream and the Brazil Current?
It turns the Gulf Stream southwest and the Brazil Current northeast.

It turns the Gulf Stream northwest and the Brazil Current northeast.

It turns the Gulf Stream northeast and the Brazil Current southwest.

It turns the Gulf Stream northeast and the Brazil Current northwest.

Answers

Answer:

The Coriolis effect acting on these currents causes northern hemisphere gyres to move in a clockwise direction and southern hemisphere gyres to move in a counterclockwise direction.

Explanation:

The Coriolis effect does the impact on the Gulf stream and the Brazil Current by turning the Gulf Stream towards northwest and Brazil Current northeast. Thus, the correct option is B.

What is Coriolis effect?

The Coriolis effect results in bending the direction of surface currents to the right in the Northern Hemisphere and left in the Southern Hemisphere. The Coriolis effect causes winds and currents to form the circular patterns. The direction in which they spin depends upon the hemisphere in which they are present.

Coriolis Effect is named after the French mathematician and physicist Gaspard-Gustave de Coriolis. It affects the weather patterns of an area, it affects the ocean currents, and it also affects air quality.

Therefore, the correct option is B.

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Leaves are a part of a plant’s shoot system. The phloem tissue in leaves transports-

A. glucose produced during photosynthesis
B. oxygen needed to undergo photosynthesis
C. pollen from the stigma to the ovary
D. bacteria needed for nitrogen fixation in roots

thanks!

Answers

Answer:

A.

Explanation:

I'm pretty sure it's A, glucose produced during photosynthesis.:) Hope it helps.

plz help me now !!!!!!!!!!!!!!!!!!!!

Answers

Answer:

imagine 2

Explanation:

tha is the answer

Answer:

I think the answer is image 2

Explanation:

help pleas im super slow i hate science

Answers

Answer:

I think it's option c 'Biotic and Abiotic'
Biotic and abiotic factors

The following table was made to compare the different seismic waves. What correction needs to be made?

A. Rayleigh waves have a rolling movement and Love waves have a horizontal movement that is perpendicular to the wave.
B. Rayleigh and Love waves travel through solid and liquid.
C. Rayleigh and Love waves are body waves, P-waves and S-waves are surface waves.
D. P-waves have a vertical movement that is perpendicular to the wave and D-waves has a compression movement.

Answers

Answer:

b

Explanation:

The different seismic waves is "Rayleigh and Love waves travel through solid and liquid."

What is Rayleigh wave?

A specific kind of surface acoustic wave which thus travels along the surface of solids is known as a Rayleigh wave.

What is seismic waves?

An earthquake or maybe an explosion can cause an elastic wave called a seismic wave.

Therefore, the different seismic waves is "Rayleigh and Love waves travel through solid and liquid."

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Chickens express three variations for feather color: white, black, and black and white speckled. The genotypes are below:

WW = white
BB = black
WB or BW = black and white speckled

Which conclusions about these two traits are valid?

Answers

Answer:

B. White feather color is dominant and black color is recessive.

Explanation:

White people were dominant over blacks in the 17th century to right now. The whites have more power over blacks.

hope this helps.

A manual contains instructions for how to build a variety of structures using a set of interlocking bricks. If this scenario is used as a model for genetic information, which statement is correct?
A, Each set of instructions is a protein
B, Each structure is a gene
C, The manual is a chromosome ​

Answers

Answer:

b

Explanation:

b  Each structure is a gene

A manual which contains all the instructions for how to build a variety of structures using a set of interlocking bricks, in this model the manual is a chromosome. Thus, the correct option is C.

What is Chromosome?

The chromosomes are the building blocks of the genetic code. A manual contains all the instructions regarding how to build blocks or proteins in case of body of an organism and is also used to make models for genetic information.

At the functional level of genes, DNA contains all instruction manuals that describes the cells information. These genes are transferred during the process of fertilization and are passed on to the offspring.

Therefore, the correct option is C.

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why does Earth have so much biodiversity

Answers

the high biodiversity of certain mountains is linked to the geological dynamics of mountain building.
Sustainability is most likely the answer.

Biodiversity = Sustainability

What is being described in the passage?

Answers

Answer:

I think it's a tectonic plate(also called lithospheric plate). :D

Hope this helps.

Explanation:

Pls give brainliest.

Tectonic plates is being described

Which best describes the relationship between chromosomes, genes, and inherited traits?

Answers

Answer:

Genes are located within chromosomes. Genes determine the passing and expression of inherited traits from parent to offspring.

Explanation:

YW!

Check all locations where a pulse can be taken.

carotid

brachial

radial

femoral

popliteal

dorsalis pedis

Answers

Answer:

carotid  

brachial  

radial  

femoral  

popliteal  

dorsalis pedis

Explanation:

These are all places where your pulse can be taken.

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

All of above carotid, brachial, radial, femoral, politeal, dorsalis pedis

Unscramble the word in red to complete each sentence. (Refer to lesson if necessary)

Answers

1.germs
5.diseases
6.Shots
7.skin
8.stress

Characteristics of physical properties include: (check all that apply)
Group of answer choices

B. Properties that can be observed without changing the identity of the object or substance

A. Properties that we see through a change of color

D. None of these

C. Color, shape, size, density, density

Answers

-Properties that can be observed without changing the identity of the object or substance
-Color, shape, size, density
The answers are B and C
Hope this helps

Topsoil is made up mostly made up of what ingredient? HURRY PLS!!! I will give Brainiest


A. rock and mineral particles

B.millions of animals

C. 5 billion microorganisms

D. 100 miles of root hairs


Correct answer = Brainliest

Answers

A, this is my guess because topsoil is made mostly of humus(sand, silt, clay and broken down organic matter) and the rest of the answers don’t make sense, hope this helps :]

A. Rock and mineral particles
I’m not sure what quiz this is but I remember getting this right on my chemistry quiz.

Genes are sections of DNA that code for a particular trait. Genes are. A carbohydrates B. lipids C. proteins D. nucleic acids PLEASE HURRY I WILL MARK BRAINLIEST

Answers

D. Nucleic acids…Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.
The answer is D.) nucleic acid

can someone tell me for these 2 questions

Answers

Answer:

Enzymes

Stamen

Explanation:

You're correct for the first question, the second question's answer is Stamen.

Answer:

Enzymes

Stamen

What causes days to be warmer on one part of Earth than on another?

A. the number of cars on the road

B. the rotation of Earth

C. the speed of Earth in its orbit

D. the angle at which the sun strikes Earth

Answers

Mmmm I would say D because it seems like the one and a good one

The days to be warmer on one part of Earth than on another because  the angle at which the sun strikes Earth.

What would cause earth to have a shorter day?

As the Earth moves around the sun during a year, the northern half of the Earth is tilted towards the sun in the summer, making daytime longer than night.

Thus, option "D" is correct.

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Which of the following traits are environmentally caused and not passed from parent to offspring genetically?

Answers

Answer:

A

D

Explanation:

languages and problem solving skill can be learned. but eye color and earlobe shape cannot.

The language you speak and problem solving skills.

In a particular breed of rabbits, fur color is gray or white. If a rabbit with gray fur and a rabbit with white fur reproduce and the offspring all have gray fur, what can you infer about the gene for fur color?

Answers

Answer:

D

Explanation:

The gene for dominant fur is dominant over white fur. The relationship between two genetic variants is referred to as dominant. Each gene has two alleles that an individual inherits from each parent.

What is dominant gene?

One allele of a gene, known as the dominant gene, will be expressed if the alleles are different. The impact of the other allele, known as the recessive one, is concealed.

Dominant describes the relationship between two genetic variants. If one is in charge, the other must be subordinate. Then it is referred to as recessive.

A dominant gene, or dominant form of a gene, is a specific variant of a gene that expresses itself more powerfully on its own than any other version of the gene that the individual is carrying—in this example, the recessive—for a variety of reasons.

Therefore, The gene for dominant fur is dominant over white fur. The relationship between two genetic variants is referred to as dominant. Each gene has two alleles that an individual inherits from each parent.

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According to the fossil record, how long ago do scientists believe life on Earth first appeared?

Answers

Answer:

B

Explanation:

We know that life began at least 3.5 billion years ago, because that is the age of the oldest rocks with fossil evidence of life on earth.

i believe it is 3.5 billion years ago

Match each type of fossil to the description that best matches.

Answers

Answer:

1. B.  2. D. 3. A. C.

Explanation:

That's the best I could do. With it so blurry.

Summarizing your investigation using the Five-Column Chart. For my investigation I use Solid.

Answers

Answer:

I don't know what I am answering

Explanation:

what was the question

Answer:

correct

Explanation:

Other than coral bleaching , what are other effects of the increased heat and carbon dioxide absorption by oceans ?
A: Depletion of fish stocks
B: Droughts
C: All of the above
D: Hurricanes

Answers

A depletion of fish stocks. Carbon dioxide makes ocean water more acidic which is dangerous to fish.
The answer is A, the other person explained it…

The following table was made to compare rocks and minerals. What information in the table needs to be corrected?

A. Rocks do have specific chemical compositions and minerals do not have specific chemical compositions.
B. Rocks include granite and marble, minerals include quartz and diamond.
C. Rocks do have specific chemical compositions and minerals do as well.
D. Rocks include quartz and diamond, minerals include granite and marble.

Answers

C! I hope this helped :)

The correction that is needed to be made is that rocks do have specific chemical compositions and minerals do as well. The correct option is C.

What are minerals?

Minerals are elements found on the Earth and also in foods which our bodies require for normal development and function.

Minerals generally have certain specific chemical compositions, but it is not in case of rocks.

Thus, the correct option is C.

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How do you know that an object in space is moving through the sky?

Answers

Answer:

See explanation

Explanation:

Objects in the sky could really be moving. You and tell if you stand vary still and focus on the object. Or they reflect our motion through space, which makes it look like the object is moving.

Just look at it or measure the angle of the object from your position and see if it has change relative to your location and not the orbiting of the earth around the sun

Which of the following are examples of what scientists can learn from studying fossils?

Select all that apply

Answers

the answer is a and c
The answer is a and c

why unfavorable traits do not usually get passed to offspring? No links please

Answers

Answer:

traits that hinder survival eventually disappear

Explanation:

living things adapt to their surroundings

Hehe I really don’t no the answer

If the normal body cells of an organism each contain 36 chromosomes, how many chromosomes would be found in a gamete produced by that organism?

Answers

The answer is c hope this helps can i plz have brainliest :D)
The answer is C. I did this a couple days ago
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