Phospholipids is the answer
Answer:
Entirely asexual populations of animals are rare.
The cost of sexual reproduction is considered to be twice that of asexual reproduction, because sexual females produce ≈ 50% male offspring, and males typically contribute only their genes to reproduction (Maynard Smith, 1978). Following this logic, asexual reproduction should dominate unless there is greater than a two-fold advantage to sexual reproduction.
B) Factors that might maintain a given mode of reproduction might include access or availability of mates, disease, or parasites. For example, if diseases and parasites have a major effect on the population, the Red Queen hypothesis suggests that sexual reproduction would be favored
C) Sexual selection is thought to be one way by which sexual reproduction is maintained, because only fit males are able to mate. In an environment free from enemies, asexual reproduction would be favored, but are unlikely to persist over evolutionary time, because when the environment changes they will have much less ability to adapt (owing to a lack of novel genetic variation that would be provided by segregation and recombination in a sexual population).
Answer:
Option-C
Explanation:
Action potential refers to the generation of electrical activity due to the influx and efflux of ions in the cell.
The cell which transmits the action potential is known as the neuron and the neuron maintains the membrane potential at -70 mv. The influx of sodium ions causes depolarization when it crosses the threshold value.
The generated action potential now travels in the neuron through its long tubular structure called an axon. The axon transmits the signal from the cell body towards the axon terminal and thus is known as the down the axon.
Thus, Option-C is the correct answer.
