Question

Question 61

In a cell with a diploid number (2n) of 12, there are 12 chromosomes per set.

False

True

Question 59

Heteroplasmic mothers can produce homoplasmic children.

False

True

Question 54

DNA ligase is an enzyme

A. That facilitates transcription of specific genes

B. That joins fragments in normal DNA replication

C. Which limits the level to which a particular nutrient reaches

D. Involved in protein synthesis

E. Of bacterial origin which cuts DNA at defined base sequences

Answer 1

61) diploid cell has two sets of chromosomes.

diploid number of chromosomes=12

so number of chromosomes in each set=12/2=6

Given statement is False.

62) heteroplasmy is a condition when a cell has different types of mitochondria ( that is mitochondria with genetic composition) during cell division mitochondria assort randomly so the daughter cells can be either homoplasmic or heteroplasmic so this statement is True.

63) DNA ligase is an enzyme that connects two DNA fragments via phosphodiester bonds using the energy of ATP. Okazaki fragments produced during DNA replication is linked to each other using DNA ligase.

so the answer is B) That joins fragments in normal DNA replication

That facilitates the transcription of specific genes- Transcription factors

Involved in protein synthesis-Ribosome

Of bacterial origin which cuts DNA at defined base sequences-restrcition enzymes.