Question 14 1 pts Due to the difference in the size of gametes produced by males
ID: 3166322 • Letter: Q
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Question 14 1 pts Due to the difference in the size of gametes produced by males and females, selection operates differently on the sexes. Why? O Eggs are fewer and more metabolically expensive to produce, while sperm require less energy to produce and are produced in greater quantities. Male reproductive success is therefore limited by the availability of eggs. O Eggs require less energy to produce and are produced in greater quantities, while sperm are fewer and more metabolically expensive to produce. Male reproductive success is therefore limited by the limited number of sperm produced O Eggs are fewer and more metabolically expensive to produce, while sperm require less energy to produce and are produced in greater quantities. Female reproductive success is therefore limited by the availability of eggs. O Eggs require less energy to produce and are produced in greater quantities, while sperm are fewer and more metabolically expensive to produce. Female reproductive success is therefore limited by the limited number of sperm produced.Explanation / Answer
14. Option A is correct.
In most of the species, eggs are fewer in number and production of eggs is energetically costly. This is because fertilized egg provides all the nourishment for the developing embryo. Hence it stores food and energy reserves.
On the other hand, male gametes are produced in large numbers. They simply fuse their genome with the egg cell. Their number is so large so that at least one male gamete could reach and fertilize the egg.
Female reproductive success is limited by the availability of nutrients to grow.
Male reproductive success is limited by the availability of egg cells.
15. Option B is correct.
Apomixis = Asexual formation of a seed from the maternal tissue without meiosis or fertilization. It produces genetically identical offspring.
Automixis = Formation of gametes by meiotic division followed by their fusion. It produces genetic variation due to recombination.
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