Question

1. A severe disease that is inherited as an autosomal recessive trait is more likely to skip generations in a pedigree than an autosomal recessive trait that cuases a harmless phenotypic variant because

a) all autosomal recessive traits skip generations

b) a person with the harmless variant is less likely to reproduce than a person with the disease

c) a person with an autosomal recessive disease is less likely to be well enough to reproduce than a person with a harmless trait variant

d) all inborn errors of metabolism are are dominant

2. In a human pedigree that traces the inheritance of albinism, a filled square represents a ______

a) male with albinism

b) female with albinism

c) heterozygous male

d) heterozygous female

3. In a human pedigree that traces the inheritance of sickle cell disease, a half-filled circle represents a ____

a) male with the disease

b) female with the disease

c) heterozygous male

d) heterozygous female

4. Which of the following genotypes is homozygous?

a) RrYY

b) RRYY

c) RryY

d)RrYy

5. For two traits A and B with two alleles each, the genotypes of the gametes that a heterozygote would produce are_____

a) AB,Ab,aB,ab

b) AB,ab

c) Ab and ab

d) AB, ab, Ab

Answer 1

A severe disease that is inherited as an autosomal recessive trait is more likely to skip generations in a pedigree than an autosomal recessive trait that causes a harmless phenotypic variant because

c)a person with an autosomal recessive disease is less likely to be well enough to reproduce than a person with a harmless trait variant

[An autosomal recessive disorder means two duplicates of an irregular gene essential be current in instruction for the illness or attribute to grow.]

In a human pedigree that traces the inheritance of albinism, a filled square represents a ______

a)male with albinism

[Dissimilar kinds of albinism can partake dissimilar designs of inheritance, contingent on the genetic reason of the disorder.]

In a human pedigree that traces the inheritance of sickle cell disease, a half-filled circle represents a ____

d)heterozygous female

[Females can be heterozygous for a representative and consequently transmit the receding allele deprived of articulating it.]

Which of the following genotypes is homozygous?

b)RRYY

[The genotype is the portion of the genetic temperament of a cell, and consequently of an organism or singular, which regulates one of its features.]

For two traits A and B with two alleles each, the genotypes of the gametes that a heterozygote would produce are_____

a)AB,Ab,aB,ab

[Each of two or extra substitute procedures of a gene that ascend by alteration and are create at the same residence on a chromosome.]