Home
Class 11
BIOLOGY
According top most recent studies, each ...

According top most recent studies, each chromosome consists of

A

single double helical DNA which is higly coiled and folded

B

variable number of DNA helices, depending upon the length of chromosome

C

many small DNA helices, which are joined by peptide linkages

D

small DNA helices, wrapped around each other like a rope.

Text Solution

Verified by Experts

The correct Answer is:
A

There is a single, long double-stranded, linear DNA contains biological and genetic information. It is highly coiled and folded, however this packing varies during the cell cycle.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion: During anaphase, centromere of each chromosome splits and chromatids separate. Reason: During anaphase, chromatids move to opposite poles.

Selelct the incorrect mathc regarding mitotic cell division. {:((i)"Prophase",-,"Chromosomes begin to uncoil"),((ii)"Metaphase",-,"Chromatids move aprt"),((iii)"Telophase",-,"The nuclear membrane reappears"),((iv)"Late anaphase",-,"Each chromosome consists of two chromatids"),((v)"Interphase",-,"Chromosomes are not distinct"):}

There are two opposing views about origin of modern man.According to one view Homo erectus in Asia were the ancestor of modern man.A study of variations of DNA however suggested african origin of modern man. What kind of observation of DNA variation could suggest this:

There are two opposing views about origin of modern man. According to one view Homo erectus in Asia were the ancestors of modern man. A study of variation of DNA however suggested African origin of modern man. What kind of observation on DNA variation could suggest this ? (a) Greater variation in Asia than in Africa (b) Greater variation in Africa than in Asia (c) Similar variation in Africa and Asia (d) Variation only in Asia and no variation in Africa

During anaphasic movements of chromosomes, ___ of each chromosome is/are towards the pole and ___ of the chromosome trail(s) behind.

Assertion: Metaphase II begins with splitting of centromere of each chromosome into two. Reason: In Anaphase II chromosomes align at the equator.

In recent years , DNA sequence (nucleotide sequence ) of mt-DNA and Y chromosomes were considered for the study of human evolution because :