Biology Middle School

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

Simply create a dihybrid cross, and then create ratios from the outcomes. Remember that ratios only come from the bottom part of any fractions *If you need more help on dihybrid crosses I can send an example image

Answer 2

Dihybrid cross is a experiment including mating between two organisms, that are identically hybrid for two traits. The ratios of traits in F2 generation will be 9:3:3:1.

What is Punnett square?

Punnett square is the square diagram used to identify the genotype of the cross in experiment.  

Genotype is the collection of genes and phenotype is the physical appearance of the individual. The Punnette square for the given case will be creates as given in the image attached.

Thus, the ratio of traits will be 9:3:3:1 in the F2 generation.

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Mendel Carried Out A Dihybrid Cross To Examine The Inheritance Of The Characteristics For Seed Color

Related Questions

what are the uses of compases?

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Answer:

to tell directions

Explanation:

find your way

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Locate places

someone can you plzzz give me a brainliest

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Answer:

yes

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Answer:

okay

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What would the seasons on Earth be like if its axis was tilted like Uranus, perpendicular to its orbit? What would the climate at your location be like compared to how it's now?
PLZ Help!! I will give you a brainliest!

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Answer:

srry i dont know i wanted points so i can ask my question but good luck

Explanation:

The hardest question ever: What is truth?

Answers

the quality or state of being true.
a statement or phrase that is not false meaning it is true

Observe the two scenarios involving electrically charged objects. Predict what will happen when you bring the objects close together.

Two scenarios with electrically-charged objects. In the first scenario, a negatively charged balloon is brought close to a positively charged soda can. In the second scenario, a negatively charged balloon is brought close to a negatively charged balloon.

The balloon will attract the soda can, while the two balloons will repel each other.
The balloon will attract the soda can, while the two balloons will do nothing.
The balloon will repel the soda can, while the two balloons will also repel each other.
The balloon and soda can will do nothing, while the two balloons will repel each other.

Answers

Answer:

the balloon and soda can will do nothing, while the two balloons will repel each other

Explanation:

opposites attract and the soda can is too heavy to be attracted to the balloon

Like the person above me said in the comments, it might be (A).

Plants alter their generations by switching between
phases.

Answers

Answer:

This is false. They alter their generations by giving birth to newborn plants. they do not alter their generations by switching between phases.

Explanation:

A phase change diagram for water is shown below. The star on the diagram represents the temperature and pressure of some water vapor that a scientist has placed in a special container.


The scientist wants to make changes to the container that will allow the container to have some liquid water, some ice, and some water vapor at the same time. What change should the scientist make to the container?
A.
The temperature should not be changed, but the pressure should be increased.
B.
The temperature should not be changed, but the pressure should be decreased.
C.
The temperature should be increased, but the pressure should not be changed.
D.
The temperature should be decreased, but the pressure should not be changed.

Answers

The temperature should be decreased, but the pressure should not be changed.

What is Temperature and Pressure relation ?

In contrast, as a gas's pressure falls, its volume rises as a result of the gas's ability to spread its particles farther apart. Because the volume of the gas has risen, weather balloons become larger as they ascend through the sky to lower pressure areas.

This is because when the atmospheric gas exerts less pressure on the balloon's surface, the inside gas expands until the internal and external pressures are equal.

Some of the early studies that established the quantitative relationship between the pressure and volume of a gas were done by the Irish chemist Robert Boyle (1627-1691).

Therefore, The temperature should be decreased, but the pressure should not be changed.

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Explain the difference between the first day of spring (vernal equinox) and the first day of summer (summer solstice).
I will give you a brainliest!!!!

Answers

Answer: Vernal equinox(about March 21): day and night of equal length, marking the start of spring. Summer solstice (June 20 or 21): longest day of the year, marking the start of summer.

vernal = spring

solstice = summer

Answer:

See explanation

Explanation:

The first day of spring (March 20) means the first day of the growing season. it also has some cold temperatures, rain and sun. The first day of summer (June 20 or 21) means the first day of school break. summer has sun, which you will need to wear summer clothes.

vernal = spring

solstice = summer

hope this helps.

Describe the main difference between passive and active transport

Answers

Answer:

In Active transport the molecules are moved across the cell membrane, pumping the molecules against the concentration gradient using ATP (energy). In Passive transport, the molecules are moved within and across the cell membrane and thus transporting it through the concentration gradient, without using ATP (energy).

Explanation:

hope it is hopeful

Answer: Passive mechanisms like diffusion use no energy,
while active transport requires energy to get done.

Outline the pathway of a breath of air from the nose to the alveoli.

Answers

Answer:

Pathway of air: nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)

Explanation:

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Air travels through the following structures on its path to the alveoli (the site of gas exchange): nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles.

What is breathing?

The trachea (windpipe), which is further separated into bronchial tubes, receives it from there. Bronchioles are another division of the bronchial tube, the little alveoli structure is where the bronchioles eventually come to a stop.

Through our noses, we breathe air into our bodies, after then, it moves via the larynx, pharynx, and nasal cavity before entering the windpipe, also known as the trachea.

Therefore, air enters both lungs through bronchi that branch off of the trachea.

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How could you describe the size of an atom?

A It is so large it is bigger than a tree in the forest.
B It is so small it cannot be seen without magnification.
C It is the size of a grain of sand and can be seen with our eyes.
D It is the size of an apple or a large piece of fruit.

Answers

B because atoms are very small and cannot be seen with your eyes
Its B

Atoms are extremely small, typically around 100 picometers across.

What molecule that is created during photosynthesis provides energy for cellular processes?

chlorophyll

ATP

oxygen

glucose

Answers

Answer:

D. glucose.

Explanation:

I don't have any info on it so, hope this helps.

Glucose, Photosynthetic cells contain chlorophyll and other light-sensitive pigments that capture solar energy. In the presence of carbon dioxide, such cells are able to convert this solar energy into energy-rich organic molecules, such as glucose.

Multiple sclerosis is a disease in which the myelin sheaths of neurons in the central nervous system break down. What symptoms might this cause? Why?

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Answer:

MS and other demyelinating diseases most commonly result in vision loss, muscle weakness, muscle stiffness and spasms, loss of coordination, change in sensation, pain, and changes in bladder and bowel function.

Explanation:

thats is correct

Answer:

it causes vision to become worse it lowers imune system it  causes bad  balence and other prolmes

Explanation:

i have ms

If DNA sequence were to change in super hero's, what would this be called?

*Just for an assignment*

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it would be called a mutation

Number 1 of the cell in the image below is the

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Answer:

it looks like chloroplast is this a plant or animal cell?

Explanation:

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