Given below are two statements:
Statement I - In prokaryotes, there is only replicon however in eukaryotes, these are several replicons in tandem.
Statement II - Two separated strands in a replicon of DNA are prevented from re-joining by helicase enzyme.
In light of above statements, choose the correct answer from the option given below.
Which of the following characteristics are seen in a stable community?
i. It is strong enough to withstand environmental disturbance and recovers quickly.
ii. It is resistant to invasive species.
iii. It exhibits constant change in biomass production over a period of time.
iv. It has more species diversity.
Given below are two statements:
Statement I - Back cross is the crossing of $F_1$ hybrid with one of the two parents from which they were derived.
Statement II - Test cross involves the crossing of $F_1$ - hybrid with its homozygous recessive parent.
In light of above statements, choose the correct answer from the option given below.
Complete the analogy with respect to structure of sperm
Nebenkern : ' X ' : : Acrosome is formed from : ' Y '
'X' | 'Y' |
---|---|
Mitochondria | centrioles |
'X' | 'Y' |
---|---|
Nucleus |
Golgi body |
'X' | 'Y' |
---|---|
Mitochondria | Golgi body |
'X' | 'Y' |
---|---|
Nucleus | centrioles |