Answer:
they are nursed by their mothers
Explanation:
Answer: The correct answer is option a.
Explanation:
Prezygotic isolation is a mechanism by which mating and fertilization is prevented. Thus, it prevents the formation of a zygote.
It can be achieved by various reasons such as temporal differences (difference in mating seasons), habitat isolation, behavioural differences (different mating rituals such as different dance patterns, voice calls, et cetera), mechanical isolation, et cetera.
Thus, different breeding calls prevent the species to interbreed with each which ultimately prevent the formation of zygote formation.
Hence, it is a type of prezygotic isolation.
Advantages of asexual reproduction:
- There is no need for a mate/ only one parent is required
- It takes less time compared to sexual reproduction
Disadvantages of asexual reproduction:
- There is little genetic variation/less diverse population
- Offspring cannot adapt to change
Advantages of sexual reproduction:
- Genetic diversity
- Offspring can adapt to change
Disadvantages of sexual reproduction:
- Two parents are needed
- Slow reproduction compared to asexual reproduction
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This is referred to as: spontaneous recovery
Spontaneous recovery is a theory of learning and memory which involves unexpected and recurrence of a conditioned response after a period of reduced response or delay. Spontaneous recovery is associated with classical conditioning and operant conditioning. Extinction will happen quickly after a spontaneous recovery, if the conditioned and unconditioned stimulus is not connected.
