When a tall plant with rounded seeds (TTRR) is crossed with a dwarf plant with wrinkled seeds (ttrr), the F₁ generation consists of tall plants with rounded seeds. How many types of gametes an F₁ plant would produce ?

One

Three

Four

Eight

A.

One

Parent generation - Tall round seeds Dwarf wrinkled seeds

TTRR x ttrr

Gametes - TR tr

F₁ generation - TtRr

Therefore, only one type of gametes is produced in F₁ plants, i.e. TtRr or Tall round seeds.

Inheritance of ABO blood groups illustrates

The number of chromosomes in Klinefelter's syndrome are :

Sex determination in humans takes place by

Turner's syndrome chromosome pattern is:

'Heterosis' is related to :

First geneticist, father of genetics was

Crossing over in diploid organisms is responsible for

The genotype of a man having female sexual characters will be :

The main cause of Edward syndrome, Patau syndrome and Down syndrome is :

Principles of Inheritance and Variation