Embibe Experts Solutions for Chapter: Principles of Inheritance and Variation, Exercise 4: Exercise-4

Down's syndrome is due to

A normal girl has colour-blind brother? Which statement is true?

$2\mathrm{A}+\mathrm{ZW}$$-\mathrm{ZZ}$ genotype is a type of sex determination found in

Which of the following has autosomal monosomic condition?

Inheritance of human blood group is controlled by three alleles ${\mathrm{l}}^{\mathrm{A}}, {\mathrm{l}}^{\mathrm{B}}$ and $\mathrm{i}$ or ${\mathrm{l}}^{\mathrm{o}}$. How many possible genotypes and phenotypes can be produced respective by these alleles in humans.

If one parent has a blood group$\mathrm{A}$ and the other parent has a blood group $\mathrm{B}$. The offspring have which blood group?

The red flowered plants $\left(\mathrm{RR}\right)$ of Antirrhinum crossed with white flowered plant $\left(\mathrm{rr}\right)$ ${\mathrm{F}}_1$ generation produced bearing pink-flowered plants on selfing of ${\mathrm{F}}_1$, generation ${\mathrm{F}}_2$, generation obtained. In which the ratio of pink and red flowered plants will be

In an experiment on pea plants, pure plants with yellow round seeds (YYRR) were crossed with plants producing green wrinkled seeds (yyrr). What will be the phenotypic ratio of F₁ progeny?