Please help with this genetics question. If possible, explain your reasoning. Thank you !
When a population is reduced to a very small number of breeding individuals, random genetic changes
called occur. As a result of these kinds of changes,
variation in genotypes and phenotypes will probably increase compared with the amount of variation present in the original population TRUE OR FALSE?
genotypes and phenotypes are likely to occur at different frequencies in both the original and reduced populations TRUE OR FALSE?
the reduced population will have a higher probability of extinction than a similar but larger populationTRUE OR FALSE?
Gene pool is the sum of all genes present in the individuals of a population. Larger the size of population, larger and rich will be gene pool. When a population is reduced to very small number due to either bottleneck effect or founders effect, the gene pool is drastically reduced. It leads to changes in gene frequencies.
As a result of these kinds of changes, variation in genotypes and phenotypes will probably increase compared with the amount of variation present in the original population: False.
As a result of genetic drift, gene pool is reduced. This means lesser variations in the population. Hence, this statement is false.
Genotypes and phenotypes are likely to occur at different frequencies in both the original and reduced populations: True
This is true because the reduced population may randomly contain one type of individuals or a group, which may not truly represent the allelic frequency of whole population.
The reduced population will have a higher probability of extinction than a similar but larger population: True.
Smaller populations face the danger of inbreeding depression which further reduce the gene pool and lead to a reduction in heterozygosity in future generation. This makes them less adaptable to changing environmental conditions or other external forces.
Please help with this genetics question. If possible, explain your reasoning. Thank you ! When a...