Question

A homozygous plant bearing round seeds (RR) was cross with homozygous wrinkled seeds (rr).

1. Find out the genotype and phenotype of the F1 generation.

2. Obtain the progeny of F2 generation by self-crossing the F1 progeny.

3. Give the genotypic and phenotypic ratio.

Answer 1

Answer:

In a homozygous plant round seeds (R) are dominant over wrinkled seeds (r).

(i)Draw a Punnett square to show the gametes and offspring when both the plants have heterozygous round seeds (Rr).

(ii) Mention the phenotype and genotype ratios of the offsprings in F

2

generation.

(iii) Name the sex chromosomes in human males and females.

(iv) Briefly explain the term mutation.

(v) What is the number of chromosomes in the gametes of human beings?

Explanation:

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