Two genes are in strong linkage disequilibrium (LD) in a population, with a value of D =
0.16.
a. If the two genes are on different chromosomes and the population undergoes
random mating for two generations, what will the new values of D be after those
two generations? [Show calculations, but no written explanation necessary].
b.Would your answer to part (a) increase, decrease, or stay the same if the genes were on the same chromosome? Briefly explain why
After n generations of random mating, the measure of association Dn is calculated as follows:
a.

b.
If the two genes are on the same chromosome, the genes are said to be linked. The r value is less than 0.5 in this case, and D decreases more slowly. That means, the value of D increases if the two genes are on the same chromosome.
Two genes are in strong linkage disequilibrium (LD) in a population, with a value of D...
Linkage Disequilibrium a) Mention two processes that may cause LD. b) Why may the extent of LD vary over a chromosome? c) After how many generations have the LD between two loci with a recombination rate of 0.1 declined to 50% of the starting LD? d) Calculate LD between two biallelic loci (alleles A/a and B/b) in a population that has just been formed by mixing equal number of individuals from two source populations with the following allele frequencies: Population...
1. If two strains of true-breeding plants that have different alleles for a certain character are crossed, their progeny are called a. the P generation. b. the F1generation. c. the F2generation. d. F1crosses. e. F2progeny. 2. Mendel’s crossing of spherical-seeded pea plants with wrinkled-seeded pea plants resulted in progeny that all had spherical seeds. This indicates that the wrinkled-seed trait is a. codominant. b. dominant. c. recessive. d. Both a and b e. Both a and c 3. Segregation of...
C++. Need some help getting started. We will also have the following two functions: 1. A mutate function that randomly modifies a chromosome. 2. A crossover function that takes two chromosomes and splits each one at the same spot, then combines them together. Our genetic algorithm works by iterating over generations of chromosomes via the following process: 1. Generate random population. 2. Until we get an answer that is good enough, do the next steps in a loop: (a) Do...
need help with this ..
From the pages 571-587 attached below.
1a) Suppose a population of guppies was infected with a
parasite. In that population a mutation results in a parasite
resistant genotype that spreads through the population through
natural selection. A subsequent mutation in the parasite results in
a genotype that is unaffected by the newly evolved resistant guppy
genotype. What is the name of the hypothesis that explains this
host parasite “arms race”.?
1b) What is this name...
2. A dominant allele H reduces the number of body bristles that Drosophila flies have, giving rise to a “hairless” phenotype. In the homozygous condition, H is lethal. An independently assorting dominant allele S has no effect on bristle number except in the presence of H, in which case a single dose of S suppresses the hairless phenotype, thus restoring the "hairy" phenotype. However, S also is lethal in the homozygous (S/S) condition. What ratio of hairy to hairless flies...