Write the differences between homologous organs and analogous organs.
(ii) Write tlie dilferences between the sex chromosomes of man and sexchromosones of woman.
(iii) Sex of achildis determined by the latler. How?

Explanation

Difference between homologous analogous.
Homologous organs
* Organs of different organisms have common origin.
* They have similar structure and perform different function.
* Ex. Forelimbs of frog and forelimbs of bird,
Analogous organs
* Organs of different organisms have different origin they have different structure and perform similar function.
* Wings of bird and wings of bat.
ii) Woman have a perfect pair of sex chromosomes both called X. Man has a normal sized chromosome X and another shortsized chromosome Y.
iii) A child who inherits X chromosome from her father will be a girl and child who inherits Y chromosome from his father will be a boy both the girl and the boy inherit only X chromosomes from the mother therefore sex of a child is determined by the father.