Genetics Test Review 3: Question Preview (ID: 11469)


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A punnett square is a graphic way of determining possible genotypes of offspring for a set of parents.
a) True b) False c) X d) X
The genetic disorder shown is recessive.
a) The father listed is most likely heterozygous for the trait causing a disorder. b) The genetic disorder shown is recessive. c) The mother is homozygous recessive. d) The father is most likely homozygous recessive for the trait causing a disorder.
In the chart shown, child #4 is a girl.
a) In the chart shown, child #1 #2 are identical twins. b) In the chart shown, child #4 is a girl. c) In the chart shown, child #2 is a girl. d) In the chart shown, the mother and father are divorced.
If a father is heterozygous for freckles and a mother is homozygous dominant for freckles, what is the probability of an offspring having freckles?
a) 25% b) 50% c) 75% d) 100%
A diagram in which several generations of a family and the occurrence of certain genetic characteristics are shown is called a
a) punnett square. b) monohybrid cross. c) pedigree chart. d) family karyotype.
If the chart shows a genetic disorder, child #3 probably has a homozygous recessive phenotype.
a) If the chart shows a genetic disorder, child #1 probably has a homozygous recessive phenotype. b) If the chart shows a genetic disorder, child #2 probably has a homozygous recessive phenotype. c) If the chart shows a genetic disorder, child #3 probably has a homozygous recessive phenotype. d) If the chart shows a genetic disorder, child #4 probably has a homozygous recessive phenotype.
If a father is homozygous for freckles (F) and the mother has no freckles (f). What is the probability that an offspring will have no freckles?
a) 0% b) 25% c) 50% d) 100%
If both parents are heterozygous having dimples, what is the probability their offspring will have dimples?
a) 25% b) 50% c) 75% d) 100%
If both parents are heterozygous having long eyelashes, what is the probability their offspring will have short eyelashes?
a) 25% b) 50% c) 75% d) 100%
If a father is heterozygous for widow\\\'s peak, which is dominant, a mother has no peak, what is the probability the offspring will be homozygous recessive?
a) 0% b) 25% c) 50% d) 75%
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