Explore BrainMass

Mathematical problems in genetics and natural selection

This content was STOLEN from BrainMass.com - View the original, and get the already-completed solution here!

In a population of 1,500 wild rabbits found along the coast of Oregon, dark brown fur (B) is dominant to tan fur (b). Genetic analysis of the population revealed the following genotypic frequencies: 750 BB, 450 Bb, 300 bb

1) Suppose that the tan rabbits fitness is 9% less that dark brown rabbits. What is the selection coefficient for the tan allele?

2) How many of each genotype would you expect after one generation (given the starting point above)?

3) In the same population of rabbits, body mass is normally distributed with an average of 8 kg. Large rabbits stay warmer because they can better retain heat. After an especially cold winter, the average body mass of the breeding adult population was 8.7 kg. Heritability was established by researchers to be 0.65. What was the selection response? What was the expected average body mass of the next rabbit generation (the offspring of the parents which survived the winter)?

© BrainMass Inc. brainmass.com October 25, 2018, 4:40 am ad1c9bdddf

Solution Preview

I hope this explanation helps you to better understand the material. Quantitative genetics can be very daunting, but once you practice a bit, you'll become much better at recognizing the variables in the data and using the equations.

I'm a little confused as to the reference of genotype frequencies in the first paragraph, since the numbers that are given are NOT the frequencies but the number of individuals in the ...

Solution Summary

In this solution, mathematical problems in genetics and natural selection are solved.

See Also This Related BrainMass Solution

Evolutionary Perspective, Adaptation, Sensory Systems & Brain Receptors

1.How adaptation is important from an evolutionary perspective?

2.Describe in detail the theories surrounding one of the sensory systems in regards to how we smell, touch, taste, see, etc.

3.Comprehensively describe the sensory systems- touch and taste, from the receptors all the way into and including the brain.

View Full Posting Details