EXERCISE - 4B
Geeta Negi Biology Solutions for EXERCISE - 4B
Simple step-by-step solutions to EXERCISE - 4B questions of Heredity and Evolution from CORE SCIENCE BIOLOGY For Class 10. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from EXERCISE - 4B with Hints & Solutions
Women have a perfect pair of sex chromosomes but men have a mismatched pair of sex chromosomes because
The maleness of a human child is determined by
New species may be formed if
(i) DNA undergoes significant changes in germ cells
(ii) chromosome number changes in the gamete
(iii) there is no change in the genetic material
(iv) mating does not take place
The two versions of a trait (character) which are brought in by the male and female gametes are located on:
Select the statements that describe characteristics of gene
(i) Genes are specific sequence of bases in a DNA molecule.
(ii) A gene does not code for proteins.
(iii) In individuals of a given species, a specific gene is located on a particular chromosome.
(iv) Each chromosome has only one gene.
Explain the mechanism of sex determination in humans.
Explain the sex determination mechanism in human beings. Give relevant pictures also.
What do you mean by speciation? Explain with example.
