Embibe Experts Solutions for Exercise 1: CBSE-2019

Author:Embibe Experts

Embibe Experts Biology Solutions for Exercise - Embibe Experts Solutions for Exercise 1: CBSE-2019

Attempt the practice questions from Exercise 1: CBSE-2019 with hints and solutions to strengthen your understanding. EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY solutions are prepared by Experienced Embibe Experts.

Questions from Embibe Experts Solutions for Exercise 1: CBSE-2019 with Hints & Solutions

HARD
12th CBSE
IMPORTANT

Explain the mechanism of 'sex determination' in birds. How does it differ from that of human beings?

HARD
12th CBSE
IMPORTANT

How did Sturtevant explain gene mapping while working with Morgan?

EASY
12th CBSE
IMPORTANT

Name a human genetic disorder due to the following :
An additional X-chromosome in a male

EASY
12th CBSE
IMPORTANT

Name a human genetic disorder due to the following :
Deletion of one X-chromosome in a female

HARD
12th CBSE
IMPORTANT

Mendel crossed a homozygous pea plant having yellow and round seeds with another pea plant bearing green and wrinkled seeds. He found that in some of the F2 population, new combinations of the parental characters were observed. How will you explain the appearance of a new combination of the parental characters in F2 offspring? Support your answer with the help of a Punnett square.

HARD
12th CBSE
IMPORTANT

Generally, it is observed that human males suffer from haemophilia more than human females, who rarely suffer from it. Explain giving reasons. 

HARD
12th CBSE
IMPORTANT

F1 progeny of pea plant bearing violet flowers and snapdragon plant bearing red flowers were selfed to produce their respective F2 progeny. Compare the phenotype, genotype and pattern of inheritance of their respective F2 progeny.