What effect would this kind of mating have on genetic variation in this species
ID: 41929 • Letter: W
Question
What effect would this kind of mating have on genetic variation in this species relative to a species with approximately the same census size but where the lifetime reproductive success was similar between males and females (i.e., the two graphs looks similar in form). Explain your reasoning using basic principles of population genetics.
These seals lived but had no offspring 100 75 75 Males Females These seals died before 50 freq 50 adulthood 25 25 0 01- 11- 21- 31- 41- 51- 61 71 81 9 0 1 2 3 4 5 6 7 8 9 10 10 20 30 40 50 60 70 80 90 100 Number of offspring Number of offsprii Number of offspringExplanation / Answer
This kind of mating would result in genetic drift. Genetic drift is the change in the allele frequency in a population due to random sampling; this is also known as blind luck. It occurs in every population and in every generation. Allele may disappear completely due to genetic drift, thus reduces genetic variation. When the population is small in size, that means a population has few copies of alleles, the effect of genetic drift is larger.
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