Embibe Experts Solutions for Chapter: Principles of Inheritance and Variation, Exercise 3: Exercise-3

Tallness $(\mathrm{T}-)$ is dominant over dwarfness $\left(\mathrm{tt}\right)$ while red flower colour $(\mathrm{R}-)$ is dominant over white colour $\left(\mathrm{rr}\right)$. A plant with genotype $\mathrm{TtRr}$ is crossed with plant of genotype $\mathrm{ttrr}$. Percentage of progeny having tall plants with red flowers is

Independent assortment is absent in case of

Most favourite and ideal material for researches in genetics is

Two crosses between the same pair of genotypes/phenotypes in which the sources of gametes are reversed in one cross are called

Genetic map is one that

One of the genes present exclusively on the $\mathrm{X}$-chromosome in humans is concerned with

A woman with $47$ chromosome due to presence of additional $21$ chromosome is chracterised by

$\mathrm{R}$ and $\mathrm{Y}$ genes of maize lie very close to each other. When $\mathrm{RRYY}$ and rryy genotype are hybridised, F₂ generation will show