) Explain the process of sex determination in human beings. b) Explain how homologous and analogous organs is helps in the study of evolution of life.
Answers
Answered by
9
a) all humans have 23 pairs of chromosomes in the nuclei of their cells.2 chromosomes out of these are sex chromosomes named x and y . a female has 2 x chromosomes while a male has 1 x and 1 y chromosomes. the gametes have only one set of chromosomes. the unfertilized egg always has 1 x chromosome but sperms are 2 kinds 1 kind has " chromosome and the other kind has an y chromosome. when the sperm containing x chromosome fertilizes then it is a girl child if the sperm containing y chromosome it fertilizes and it is a boy child.
xx=girl
xy=boy
bhuvan131:
ooooo
ha ha ha
why I should interfere u interfered when we were chatting
you don't have any place to chat
why are you chatting here
Ohk yr we not
if you are human being you will go
if you are xy. xx you will go
if you're not both you will be here
XX y be here
Answered by
3
Explanation:
here is the answer for your answer
Attachments:
Similar questions