Explain male heterogamety.

Important Questions on Principles of Inheritance and Variation

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 1

Haemophilia is more common in males because it is a

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 3

Three children of a family have blood groups $\mathrm{A}, \mathrm{AB}$ and $\mathrm{B}$. What could be the genotypes of their parents?

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 5

Which of the following phenotypes of blood groups in the progeny are possible from the parental combination AXB?

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 6

Which of the following phenotypes is not possible in the progeny of the parental genotypic combination ${\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{O}}\times {\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{B}}$?

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 8

What can be the blood group of offspring when both parents have AB blood group?

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 9

If the child's blood group is 'O' and father's blood group is "A" and the mother’s blood group is "B" the genotype of the parents will be

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 33

Brief about female heterogamety.

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Zoology Standard 12>Chapter 4 - Principles of Inheritance and Variation>Evaluation>Q 35

Explain the mode of sex determination in honeybees.