One of the disadvantages of sexual reproduction compared to asexual reproduction

Question

One of the disadvantages of sexual reproduction compared to asexual reproduction is that: deleterious mutations can be removed from the population more easily. new genotypes can be introduced into the population. individuals have lower relatedness to their offspring than asexually reproducing species. there is greater variation introduced each generation in sexually reproducing species. 2. The fluid-filled ball of cells produced at the end of cleavage is called the: morula. gastrula. blastula. epiblast. fetus. 3. All organisms that are viviparous give many resources to their offspring as they develop in utero. This high energy and resource investment in the young means that they are K-strategists. False True 4. Which of the following statements is a potential problem for sexually reproducing species? Each individual has to expend energy to find another individual of the same species to reproduce. Sexual reproduction may not always result in novel genetic combinations. Natural selection is not effective in producing adaptation in sexually reproducing species. Inbreeding depression is more likely to occur in sexually reproducing species than asexually reproducing species. 5. The evolution of the amniotic egg was a significant event in vertebrates because it allowed for development in a fully terrestrial environment. False True 6. Each of the major hypotheses proposed to explain why sexual reproduction is more widespread than asexual reproduction ultimately bases its explanation on the adaptive benefit of: forming gametes of different sizes. reducing mutation rates. forming genetically distinct offspring. forming relatively slow-growing populations. forming large populations. 7. If gastrulation failed to occur, which of the following structures would NOT be formed? epiblast blastocyst inner cell mass epiderm mesoderm 8. Which of the following structures is responsible for containing waste in the amniotic egg? shell allantois yolk sac chorion amnion 9. Ovulation is triggered by a surge of which of the following hormones? luteinizing hormone progesterone follicle stimulating hormone testosterone estrogen 10. Which hormone(s) do ovaries secrete? estrogen progesterone estrogen and progesterone testosterone One of the disadvantages of sexual reproduction compared to asexual reproduction is that: deleterious mutations can be removed from the population more easily. new genotypes can be introduced into the population. individuals have lower relatedness to their offspring than asexually reproducing species. there is greater variation introduced each generation in sexually reproducing species.

Explanation / Answer

1. individuals have lower relatedness to their offspring than asexually reproducing species. offspring will get half genomes from each parent and wont be an exact copy of their parents as in asexual reproduction.

2. Blastula- During early stage of development zygote undergo many cleavages to develop blastula -ball of cells with a fluid filled center called blastocoel.

7. Mesoderm- Gastrulation produces three layers of cells- endoderm, ectoderm and mesoderm

8. Allantois- stores nitrogenous waste.

9. luteinizing hormone- helps to rupture ovarian follicle and release of the oocyte.

10. Progesterone and estrogen- helps in female sexual charecteristic development and fertilithy.

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