NEET BIOLOGY

GENETICS AND EVOLUTION

GENETIC BASIS OF INHERITANCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A colony of bacteria reproduces for 16 generations. A scientist then examines the colony and notes that almost all of the individuals are genetically identical. What does this evidence suggest?
A
The bacteria received the same nutrients.
B
The bacteria reproduced asexually.
C
The bacteria reproduced sexually.
D
The bacteria exchanged genetic material
Explanation: 

Detailed explanation-1: -A colony of bacteria is allowed to reproduce for 10 generations. A scientist examines the colony at the end of 10 generations and finds that all of the bacteria are genetically identical to each other and the original parent cell.

Detailed explanation-2: -Genetic information in bacteria and many viruses is encoded in DNA, but some viruses use RNA. Replication of the genome is essential for inheritance of genetically determined traits. Gene expression usually involves transcription of DNA into messenger RNA and translation of mRNA into protein.

Detailed explanation-3: -Asexual reproduction produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent. A single individual can produce offspring asexually and large numbers of offspring can be produced quickly.

Detailed explanation-4: -Binary fission is the asexual reproduction method used by bacteria, and it is the most common method. A single bacteria divides into two different cells, each unique.

There is 1 question to complete.