If a particular population of diploid individuals is in equilibrium and contains 16% homozygous dominant individuals, 48% heterozygotes, and 36% homozygous recessive individuals, what is the frequency of the recessive allele in this population?

In a populationof manatees, short whiskers are recessive to long whiskers. There are estimated to be only 4387 manatee left in the world. Of these, 827 have short whiskers. What is the frequency of homozygous recessive individuals?

You discover a new allele of a gene important for tail formation in mice. WT mice have long tails, but mice heterozygous for the allele have short tails. When you cross two heterozygous mice together, you obtain a 2:1 ratio of short-tailed mice to long-tailed mice. None of the short-tailed progeny are homozygous. What type of allele results in short tails? A) dominant negative allele B) temperature-sensitive allele C) lethal allele D) partially dominant allele E) incompletely penetrant allele

On an island in the Pacific Ocean, there is a species of birds with different sized beaks, with one specific gene determining their beak size. Birds who are homozygous dominant (BB) or heterozygous (Bb) for this particular gene have small beaks, while birds who are homozygous recessive (bb) for this particular gene have big beaks. For each combination of parents below, predict the frequency with which each phenotype and genotype exists. Make sure to include gametes from each parent. 1) Homozygous Dominant ( BB ) x Homozygous Dominant ( bb ) Genotypes: Phenotypes: BB Big Beaks Bb Small Beaks Bb Hint, do your percentages above add up to 100%? 2) Homozygous Recessive ( bb ) x Heterozygous ( Bb ) Genotypes: Phenotypes: BB Big Beaks Bb Small Beaks Bb 3) Heterozygous ( Bb) x Heterozygous ( Bb ) Genotypes: Phenotypes: BB Big Beaks Bb Small Beaks Bb Review: What were all the alleles used above? How many possible genotypes do you expect to find within this species, for beak size?

Using pedigree diagrams, calculate the inbreedingcoefficient (F ) for the offspring of (a) parent–offspringmatings; (b) first-cousin matings; (c) aunt–nephewor uncle–niece matings; (d) self-fertilization of ahermaphrodite.

Answer the question, using the graphs attached.

In a population of 50 flies in HWE, 12 flies have a recessive trait that causes blue wings. How many flies are homozygous dominant?

In fruit flies, gray body (G) is dominant to black body (g).  If a male with a black body mates with a female that is homozygous dominant for her gray body what are the possible genotypes and phenotypes of their offspring?  Complete the Punnett square below.  What is the expected phenotypic ratio among the offspring?

In a hypothetical population, 16% have sickle-cell anemia.  The population is in Hardy-Weinberg equilibrium.  ( sickle-cell anemia is recessive) What is the frequency of the allele for sickle-cell anemia? What is the frequency of the allele for normal hemoglobin?

If there are five alleles at a locus, how many genotypes can there be at this locus? How many different kinds of homozygotes can there be? How many genotypes and homozygotes can there be with eight alleles at a locus?