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4. In summer squash, fruit color and shape are inherited as single gene, autosomal traits. White fruit color (W) is dominant over yellow fruit color (w) and disk-shaped fruit (D) is dominant over sphere-shaped fruit (d).

a. Suppose two squash plants with the following genotypes are mated: WwDd x WwDd. What proportion of the offspring from this cross is expected to have

white, disk-shaped fruit

white, sphere-shaped fruit

yellow, disk-shaped fruit

yellow, sphere-shaped fruit

b. Suppose two squash plants with the following genotypes are mated: Wwdd x wwDd. What proportion of the offspring from this cross is expected to have

white, disk-shaped fruit

white, sphere-shaped fruit

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Deanna HettingerLv2
14 Apr 2019
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I am somewhat new to this site although I am a member, so I havethese questions I have answerd most of them my self yet I wouldlike to see if any experts, or people with some knowledge couldcould go ahead and do them so i can see if I am correct or not. Idont actually expect anybody to be able to make a punnet square, asI myself had to make my punnet squares on paper. But these are thequestions below, I will put my answers the ones I have gotten in () but if you are either able to tell me if im correct or if notshow me some sort of steps to becoming correct? Thanks ZackCross.

Solve all of these problems using a Punnett Square. ( I Havedone this mostly on paper)

In certain bacteria, an oval shape (A) is dominant over round(a) and thick cell walls (B) are dominant over thin (b). A bacteriaheterozygous for both oval shape and a thick cellwall was crossed with a round bacteria with a thin cell wall.Describe the phenotype of the offspring.

(My answer not sure if correct but I got : Oval Thick wall: Oval Thin wall : Round thick wall: Round thin wall

1:1:1:1)

2. The ability to roll the tongue sideways (A) is dominant overthe inability to roll one's tongue (a). In humans, non-attachedearlobes (B) are dominant over attached earlobes (b). Two parentswith attached earlobes can roll their tongues. They are bothheterozygous for the tongue rolling trait.

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  2. What is the genotype of the father? ( I got Bb Aa)
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  4. What are the possible gametes from the father? ( I got BA Ba Abab)
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  6. What is the phenotypic ratio of these offspring? (Didn'tunderstand?)

  1. A man heterozygous for non-attached earlobes can roll histongue. A woman with attached earlobes can roll her tongue. Assumeboth are heterozygous for the tongue-rolling trait.
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    2. What is the genotype of the father?
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    4. What are the possible gametes from the father?
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  2. In summer squash, white fruit color (W) is dominant over yellowfruit color (w) and disk-shaped fruit (D) is dominant oversphere-shaped fruit (d). If a squash plant purebreeding for whiteand purebreeding for disk-shaped fruit is crossed with a plantpurebreeding for yellow, sphere-shaped fruit, what will thephenotypic and genotypic ratios be for:
    1. the F1 generation?
    2. the F2 generation?

Any Help would be greatly apretiated I don't understand how thepoint system works but I did purchase the membership package thingso I do believe I will be able to award someone with these karmapoints which I purchased.

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