Question

help with question 3 & 4 please

3. The concept of Hardy-Weinberg equilibrium specifies five conditions under which Hardy Weinberg equilibrium will be violated and evolution will occur. Describe two conditions which generate random changes to allele frequency in a population. Describe one condition which generates non-random changes (adaptations) to allele frequency in a population. (6pts) 4. In a population of fish, short scales (s) is recessive to the wild-type condition of long scales (S). You isolate a population of 73 short scales and 157 that are long scales. What are the frequencies of the alleles in this population? Show your work for potential partial credit. (2pts)

Answer 1

Answer 3)

The random changes in the Hardy weinberg occurs because of following reasons:

* Random mating between the individuals of a population.

* No mutation in the population.

Condition which leads to non random changes in a population:

*Selection in individuals for a particular trait leads to create non random changes in a population.

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Answer4)

Short scale is encoded by recessive allele q and the dominant allele is p.

Short scale individuals number qq is 73

long scale individuals is 157

total: 157+73= 230

The allelic frequency of recessive allele q is √ Genotypic frequency of qq= √(73/230)=√0.317391= 0.563374923 or 0.563 approx

Allelic frequency of p is 1- q= 1- 0.563=0.437