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Chapter 12: Q. 32 (page 328)

In Section 12.3, 鈥淟aws of Inheritance,鈥� an example of epistasis was given for the summer squash. Cross white WwYy heterozygotes to prove the phenotypic ratio of 12 white:3 yellow:1 green that was given in the text.

Short Answer

Expert verified

Crossing with the help of Punnett square.

Step by step solution

01

Step. 1 Introduction

The expression with one gene is altered by that of the expression with one maybe more separately genetic inheritance, which is termed as epistasis.

02

Step. 2 Explanation

Having the gametes WY, Wy, wY, as well as wy for every individual The progeny of all 12 offspring which exhibit a dominant W trait would be white. Yellow progeny among us are homozygous recessive with w and still display a dominant Y gene. Green would be the color of the leftover wwyy offspring.


WYWy
wY
wy
WY
WWYYWWYyWwYYWwYy
Wy
WWYyWWyyWwYyWwyy
wY
WwYYWwYywwYYwwYy
wy
WwYyWwyywwYywwyy

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Most popular questions from this chapter

Describe one of the reasons why the garden pea was an excellent choice of model system for studying inheritance.

Mendel performs a cross using a true-breeding pea plant with round, yellow seeds and a true-breeding pea plant with green, wrinkled seeds. What is the probability that offspring will have green, round seeds? Calculate the probability for the F1 and F2 generations.

A farmer raises black and white chickens. To his surprise, when the first generation of eggs hatch all the chickens are black with white speckles throughout their feathers. What should the farmer expect when the eggs laid after interbreeding the speckled chickens hatch?

a. All the offspring will be speckled.

b. 75% of the offspring will be speckled, and 25% will be black.

c. 50% of the offspring will be speckled, 25% will be black, and 25% will be white.

d. 50% of the offspring will be black and 50% of the offspring will be white.

Which is one of the seven characteristics that Mendel observed in pea plants?

a. flower size

b. seed texture

c. leaf shape

d. stem color

Figure 12.16 In pea plants, purple flowers (P) are dominant to white flowers (p) and yellow peas (Y) are dominant to green peas (y). What are the possible genotypes and phenotypes for a cross between PpYY and ppYy pea plants? How many squares do you need to do a Punnett square analysis of this cross?
See all solutions

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