Question

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. What is the probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY ´ RrYy?

Answer 1

The answer is 0 percent.

Let's represent alleles and genotypes:
R - dominant allele for round seeds,
r - recessive allele for wrinkled seeds,
Y - dominant allele for yellow seeds,
y - recessive allele for green seeds.

RR - dominant homozygote with round seeds,
rr - recessive homozygote with wrinkled seeds,
Rr- heterozygote with round seeds,
YY - dominant homozygote with yellow seeds,
yy - recessive homozygote with green seeds,
Yy * heterozygote with yellow seeds.

So, in order to have wrinkled seeds, the offspring's genotype must contain rr, and to have green seeds, the offspring's genotype must contain either YY or Yy.
According to the image, all of the offspring will have round, yellow seeds (RRYY, RRYy, RrYY, RrYy).

Answer 2

If RRYY and RrYy is crossed the probability of the offspring having wrinkled and yellow seed is none (zero).

Further Explanation:

Dominant character is the trait that masks the effect of the other character and is phenotypically shown. Whereas, the characters which is been masked is referred to be as recessive character.

In the given case,

• R- Denotes the dominant round seed character.

• r- Represents wrinkled recessive character.

• Y- Shows the dominant character of yellow colored seeds.

• y- Is used to represent the green color recessive trait.

Mentioned below are the possible homo and hetrozygotes of the trait;

 YY – Dominant homozygote which represents the yellow seeds.

 yy – Recessive homozygote representing green color seed.

 Yy – Dominant hetrozygote that represents yellow seeds.  

 RR – Dominant homozygote representing round seeds.

 Rr – Dominant hetrozygote representing round seeds.

 rr – Recessive homozygote representing wrinkled seeds.

In the given instance for the offspring to have wrinkled and yellow seed it should have the genotype of rrYy or rrYY.  

If the cross of RRYY and RrYy is done as shown in the punnett square; the required condition is not possible.

Learn more:

1. Learn more about meiosis https://brainly.com/question/1600165

2. Learn more about the process of molecular diffusion in a cell https://brainly.com/question/1600165

3. Learn more about human sperm and egg cell https://brainly.com/question/1626319

Answer Details:

Grade: High School

Subject: Biology

Chapter: Genetics- Mendalian Inheritance

Keywords:

RRYY, RrYy, round seeds, wrinkled seeds, yellow seeds, green seeds, Mendel, heterozygotes, homozygotes, dominant, recessive.