Advertisements
Advertisements
Question
When a cell reproduces, what happens to its DNA?
Solution
During the process of reproduction, transmission of DNA from parents to offspring takes place. Before reproduction, DNA is replicated, which means two copies of DNA are produced. When the cell divides into two, these two copies are distributed equally between the two daughter cells so that similar amount and type of DNA is transferred from the parent cell to the daughter cells. It maintains the consistency in the amount and type of DNA in the living organism of a particular species.
APPEARS IN
RELATED QUESTIONS
Write the functions of the following organs of reproduction:
a. Ovaries
b. Seminal vesicle and prostate glands
Give biological explanations for All the food chains begin with green plants.
Where is the male gamete formed in humans?
Which part of the human body passes sperms from a man to a woman?
Why is it an advantage for the testes to be situated in the scrotal sac outside the main body cavity? Can you think of one disadvantage?
Diagram shows the reproductive system of female human beings:
(i) Name the parts numbered 1 to 14.
(ii) Normally, after how many days does an ovary release an egg?
(iii) Where are the sperms released during coitus?
(iv) What is the role of sperms after their ejaculation in vagina?
(v) What is the function of the organ numbered 5?
(vi) What is the gestation period in human?
Choose the Odd One Out:
Choose the Odd One Out:
If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will NOT be transported form ______
During adolescence, reproductive phase starts and ______.
