The phenotype of the F2 generation in a self cross between offspring of a homozygous pea plant bearing red flowers and homozygous pea plant bearing white flowers.

Important Questions on Genetics

MEDIUM

10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 6

How can you say that there is a complete parallelism between the behaviour of Mendelian factors and chromosomes ?

MEDIUM

10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 7

Differentiate between : Genotype and Phenotype.

EASY

10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 7

Differentiate between : Dominant and Recessive.

MEDIUM

10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 8

In man, brown eye colour is dominant over blue eye colour. What will be the genotype of the brown eyed parents of a blue eyed man ?

HARD

10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 9

In poultry, the comb is of four types that is rose comb controlled by dominant gene R, pea comb controlled by a dominant gene P. Single comb when both are recessive whereas walnut comb when both are dominant. Find out the phenotypic ratio in F2 generation when pure breeding rose comb fowl is crossed with pure breeding pea comb cock.

MEDIUM

10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 10

A pure tall plant bearing red colour flowers was crossed with a pure dwarf plant with white flowers,
(i) What would be the nature of offspring in the F1 generation?
(ii) If the offspring of the F1 generation are self-pollinated, what would be the ratio of red flowers to white flowers in the F2 generation?
(iii) What can you infer from the ratio obtained? Which law does it illustrate?

EASY

10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 12

When both the alleles are identical, they are said to be homozygous.

EASY

10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 2 - Genetics>TEST YOURSELF>Q 12

The genetic makeup of an organism is a phenotype.