CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Structure of Homologous Chromosomes

A diploid som...

Question

A diploid somatic cell of rat has a total of 42 chromosomes (2n = 42). What will be the number of DNA molecules in anaphase of mitosis?

A

84

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

42

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

21

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

None of these

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
84

Calculation of number of DNA molecules: as per question the somatic cell has 42 chromosomes. In a cell at rest number of chromosome is equal to number of chromosomes. In G2 phase DNA replication occur so the number of DNA becomes 84. Which remains constant till anaphase of mitosis after cytokinesis it is restored to 42.

Suggest Corrections

thumbs-up

0

Similar questions

A diploid somatic cell of rat has a total of 42 chromosomes (2n = 42). What will be the number of DNA molecules in anaphase of mitosis?

Q. The number of chromosomes in a somatic cell, of a diploid organism (with original of 10 pairs), after DNA replication and before mitosis would be

Q. If a cell with

5

chromosome pairs undergoes mitosis, then what be the total number of chromosomes in its anaphase stage?

Q. How many chromosomes will be present in a diploid cell at mitotic anaphase, if its egg cell has ten chromosomes?

Q. In maize, a meiocyte has

20

chromosomes. What will be the number of chromosomes in its somatic cell?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Mitosis

BIOLOGY

Watch in App

explore_more_icon

Explore more

Structure of Homologous Chromosomes

Standard XII Biology

Join BYJU'S Learning Program

CrossIcon