using concepts of mendelian genetics and natural selection, explain the increase in the phenotype frequency for black fur from the initial population through generation 40.
Using Concepts of Mendelian Genetics and Natural Selection to Explain the Increase in Phenotype Frequency for Black Fur
Answer:
In order to explain the increase in the phenotype frequency for black fur from the initial population through generation 40, we have to consider Mendelian genetics and natural selection.
Mendelian Genetics:
- Alleles: In Mendelian genetics, traits are determined by alleles. Let’s assume black fur is controlled by a dominant allele (B) and brown fur by a recessive allele (b).
- Genotype of Initial Population: Initially, the population will have a mix of genotypes for fur color, like BB, Bb, and bb.
- Phenotype Frequency: If black fur (B) is beneficial for survival or reproduction, individuals with BB and Bb genotypes will have black fur, increasing the frequency of the black fur phenotype.
Natural Selection:
- Advantageous Trait: If black fur provides a survival advantage (e.g., better camouflage in a dark environment), individuals with black fur will survive and reproduce more successfully.
- Reproduction: Black fur individuals will pass on the B allele to their offspring, increasing the frequency of the B allele in the population over generations.
- Generation 40: Through natural selection, the frequency of the B allele and black fur phenotype will increase by generation 40 as more individuals with black fur reproduce and pass on the advantageous allele.
In summary, the increase in the black fur phenotype frequency from the initial population through generation 40 can be attributed to the principles of Mendelian genetics (allele inheritance) and natural selection (survival and reproduction advantages associated with black fur).