Answer:
During DNA replication, the leading strand is synthesized in the 5' to 3' direction. The strand that runs away from the replication fork is synthesized in Fragments because DNA polymerase cannot synthesize in the 3’ to 5’ direction.
Explanation:
- A replication fork has one strand called the leading strand, it is synthesized continuously from a single primer on the leading strand template and grows in 5'-3' direction.
- The leading strand grows in the same direction in which the replication fork grows.
- The other strand is the lagging strand that is unveiled by the growing replication fork. It proceeds in the direction opposite to the movement of growing replication fork.
- The lagging strand is synthesized discontinuously because the DNA polymerase can add nucleotides only to the 3' end of a primer.
- These short pieces of synthesized DNA are okazaki fragments.Okazaki fragments are joined later by ligase.
<span>The answer is D. Example
of such a relationship is that of a tick and a cow. The tick is the
ectoparasite while the cow is the host.
The tick benefits by sucking blood from the cow while the cow is disadvantaged since it is losing some of its
blood and also the tick is a vector of disease</span>
Answer:
Pokaryote is the right answer.
Answer:
Meiosis is important because during sexual reproduction, it ensures that all produced organisms have the correct number of chromosomes. It is also responsible for producing genetic variations during the process of recombination, and it repairs some genetic defects.
The disadvantage from not having the trait normally arises only after the reproductive stage of the individual's lifecycle is mostly over. This is a special case of "no strong pressure", because evolution selects genes, not the organism. In other words the beneficial mutation does not alter the reproductive fitness.
Explanation:
Meiosis is important because during sexual reproduction, it ensures that all produced organisms have the correct number of chromosomes. It is also responsible for producing genetic variations during the process of recombination, and it repairs some genetic defects.
The exterior temperature increases steadily. (Apex) ^-^
