A few species of insects, fish, and crustaceans can reproduce sexually and asexu

Question

A few species of insects, fish, and crustaceans can reproduce sexually and asexually

1. How can the both reproductive modes continue? (Explain describing factors that occur)

2. How can the populations shift towards only asexually? (Explain describing factors that may occur)

3. Why are asexual, parthenogenetic species found at the tips of trees while their closest relatives reproduce sexually?

(Explain why this pattern occurs)

4. Normally, one would infer that lower-variation should be found with asexually-reproducing species. However, lizards that have only females and parthenogenetic species of plants have higher-variation. Explain why this is and how the variability is maintained (with examples)

Explanation / Answer

1). Asexual reproduction occurs in sessile animals as its inability to move towards the other organism does not allow sexual reproduction to occur. However, the sexual reproduction offer the advantage of genetic diversity.

Although most of the animals reproduce by any one method of reproduction, some animals are capable of reproducing through both the sexual and asexual reproduction. One possible factor contributing to this is, the varying environment throughout the year. Means, if the environment remain stable for a period of time, i.e. with full of water, and other resources needed for movement and survival, sexual reproduction occurs. If the environment does not favour and the organism cannot move to the opposite sex means, the organism can reproduce by asexual reproduction. Some of the insects, fish, and crustaceans can reproduce both sexually and asexually.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.