If one parent is heterozygous white (ww) and the other is homozygous black (ww), give the phenotype and genotype ratios for this cross.

phenotype:
genotype ratio ww: ww

plz ? ? trying to make up credits so i can graduate.. so much

Answers

The first answer is B and the second is C Because half of the kids will be homozygous black, and the other half Heterozygous white.
The answer is A. Because that best fits the question
So if you cross a heterozygous white and a homozygous black, draw a punnet square. So the box is a 2 by 2 with Ww on the top two and ww on the side to. So in the top left corner, it would be Ww, top right, ww, bottom left, Ww, and bottom right, ww. So the possible phenotypes is half and half Ww and ww. This means that two of the potential phenotypes are Ww and ww, both occurring 50% of the time
A and C are the answers... There would be two Ww's and two ww's

Option B, 1/2 white ; 1/2 black

Genotype ratio Ww:ww

Option C, 1:1

Explanation:

Given –  

First parent is heterozygous white  with genotype Ww

Second parent is homozygous black (ww)

If these two parents are crossed each other , the following offsprings are produced –  

Ww

wWwww

wWwww

The genotype of Ww is white in color

The genotype of ww is black in color  

Thus there are ½ white and ½ black  

Genotype ratio –  

Ww: ww

2: 2

1:1

There are two phenotype: black and white.

As we can observe that in heterozygous condition (Ww) the phenotype is  white. Hence, white is a dominant character whereas black is a recessive character which will be expressed only under homozygous recessive condition i.e. (ww).

Now, Ww will form two types of gametes W and w whereas ww will form only one type of gamete i.e. w.

Cross (mentioned in the attached file)

There are two white and two black offspring. Hence, the phenotypic ration (white:black) would be 2:2 which comes out to be 1:1.

Similarly, there are two Ww and two ww. Hence, genotypic ratio (Ww:ww) would be 2:2 which comes out to be 1:1.

There are two phenotype: black and white.

As we can observe that in heterozygous condition (Ww) the phenotype is  white. Hence, white is a dominant character whereas black is a recessive character which will be expressed only under homozygous recessive condition i.e. (ww).

Now, Ww will form two types of gametes W and w whereas ww will form only one type of gamete i.e. w.

Cross (mentioned in the attached file)

There are two white and two black offspring. Hence, the phenotypic ration (white:black) would be 2:2 which comes out to be 1:1.

Similarly, there are two Ww and two ww. Hence, genotypic ratio (Ww:ww) would be 2:2 which comes out to be 1:1.

Phenotype: Ww, ww 

Genotype Ratio: 2/4, 50/50 or half and half

If one parent is heterozygous white (ww) and the other is homozygous black (ww), give the phenotype
Phenotype: Ww, ww 

Genotype Ratio: 2/4, 50/50 or half and half


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