Bio 200 Exam 3 old exam questions
and answers
Three genotypes for a given location and a population ofAa with the following
frequencies ask (AA)= 0.15: f (Aa)= 0.30: f (aa)=0.55 What is P the frequency of A -
ANSWER-0.30
For the population in the previous question what will be the frequency of a a
genotype at Hardy Weinberg equilibrium - ANSWER-0.42
Hardy Weinberg equilibrium - ANSWER-condition in which a population's allele
frequencies for a given trait do not change from generation to generation
is defined as a gene with two alleles at the frequency of 5% or greater - ANSWER-
Genetic polymorphism
Which of the following is not a condition necessary for Hardy Weinberg principle to
apply - ANSWER-Small population size
Northern elephant seals were reduced by overhunting to about 25 individuals in the
late 1800s before recovering. This example was used to illustrate - ANSWER-The
effect of chance on allele frequencies
Differential reproduction of genotypes is a reasonable definition of - ANSWER-
Natural selection
What is the probability of two parents both with genotype Aa Bb having offspring with
at least one Homozygous recessive trait - ANSWER-7/16
Mandel observation that the allele gamete receives for one gene does not influence
Tthe allele received another gene led to him describing the law of - ANSWER-
Independent assortment
Occurs when one gene locus masks or modify the phenotype of a second genus
locus - ANSWER-epistasis
The child of a parent with curly hair And a parent with straight hair hasn't wavy hair.
This is an example of - ANSWER-Incomplete dominance
Most lethal genetic disorders in humans are caused by recessive trait because -
ANSWER-Individuals with lethal dominant alleles would die before passing their
genes on, while recessive alleles can persist in heterozygotes
and answers
Three genotypes for a given location and a population ofAa with the following
frequencies ask (AA)= 0.15: f (Aa)= 0.30: f (aa)=0.55 What is P the frequency of A -
ANSWER-0.30
For the population in the previous question what will be the frequency of a a
genotype at Hardy Weinberg equilibrium - ANSWER-0.42
Hardy Weinberg equilibrium - ANSWER-condition in which a population's allele
frequencies for a given trait do not change from generation to generation
is defined as a gene with two alleles at the frequency of 5% or greater - ANSWER-
Genetic polymorphism
Which of the following is not a condition necessary for Hardy Weinberg principle to
apply - ANSWER-Small population size
Northern elephant seals were reduced by overhunting to about 25 individuals in the
late 1800s before recovering. This example was used to illustrate - ANSWER-The
effect of chance on allele frequencies
Differential reproduction of genotypes is a reasonable definition of - ANSWER-
Natural selection
What is the probability of two parents both with genotype Aa Bb having offspring with
at least one Homozygous recessive trait - ANSWER-7/16
Mandel observation that the allele gamete receives for one gene does not influence
Tthe allele received another gene led to him describing the law of - ANSWER-
Independent assortment
Occurs when one gene locus masks or modify the phenotype of a second genus
locus - ANSWER-epistasis
The child of a parent with curly hair And a parent with straight hair hasn't wavy hair.
This is an example of - ANSWER-Incomplete dominance
Most lethal genetic disorders in humans are caused by recessive trait because -
ANSWER-Individuals with lethal dominant alleles would die before passing their
genes on, while recessive alleles can persist in heterozygotes
