Which of the following is most likely as a population goes through a bottleneck?
Heterozygosity decreases because genetic distance increases.
Genetic diversity increases because mutation rate increases while the population is going through the bottleneck
. Genetic diversity decreases because some alleles can be lost as the number of individuals dwindles
. The proportion of individuals that are heterozygous increases because there are fewer individuals.
2)What is meant when it says that genetic drift produces "non-adaptive" evolution?
Sometimes natural selection can favor a trait that is good for the current conditions, but when conditions change it is no longer helpful.
Evolution is just a genetic change in a population. If genes are lost from a population due to chance (i.e. genetic drift), that may not be adaptive, meaning the remaining organisms are no more fit.
Evolution isn't perfect, and sometimes it makes mistakes.
Which of the following is most likely as a population goes through a bottleneck?
Heterozygosity decreases because genetic distance increases.
Genetic diversity increases because mutation rate increases while the population is going through the bottleneck
. Genetic diversity decreases because some alleles can be lost as the number of individuals dwindles
. The proportion of individuals that are heterozygous increases because there are fewer individuals.
2)What is meant when it says that genetic drift produces "non-adaptive" evolution?
Sometimes natural selection can favor a trait that is good for the current conditions, but when conditions change it is no longer helpful.
Evolution is just a genetic change in a population. If genes are lost from a population due to chance (i.e. genetic drift), that may not be adaptive, meaning the remaining organisms are no more fit.
Evolution isn't perfect, and sometimes it makes mistakes.
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