What would happen if a mutation created a new allele that decreased fitness? *

In terms of natural selection, what is a "detrimental mutation"? O One that has a negative effect on fitness in a given environment O One that does not affect fitness in a given environment One that has a positive effect on fitness in a given environment MacBook Air 888 00 吕0 F7 F6 F5 F4 F3

A form of learning disabilities and speech impairment results from a recessive mutation in the HERC2 gene. The next 4 questions are about this mutation. In a small Amish village in Ohio, about 5 per 1000 births are affected with this disorder.  Assume Hardy Weinberg equilibrium. What is the frequency of the dominant WT HERC2 allele in this small village? A form of learning disabilities and speech impairment results from a recessive mutation in the HERC2 gene. The next 4 questions are about this mutation. Part a: In a small Amish village in Ohio, about 5 per 1000 births are affected with this disorder.  Assume Hardy Weinberg equilibrium. What is the frequency of the dominant WT HERC2 allele in this small village? a)0.005 b)0.995 c)0.07 d)0.93   Part b: What is the estimated total number of homozygous dominant individuals in this village of 1000 people? a) 70 b) 930 c) 860 d) 140

As genomes become sequenced it has become evident that genes become duplicated as a mechanism of evolution. In some cases, recently duplicated genes perform identical functions. Suppose genes R and S are of unlinked genes that in fact arose recently from such a gene duplication event. If two Rr Ss individuals are mated, what would be the phenotypic ratio of their progeny. Assume r is recessive to R and s is recessive to S.     9:7     1:2:1:2:4:2:1:2:1     12:3:1     9:3:3:1     15:1