BIOL133 EXAM 3 EXAM WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY GRADED A+ | |
VERIFIED BY EXPERTS .
Low pitched male voices (RR) and a high pitched male voice (rr). Heterozygotes have a
baritone voice. This is an example of _________.
a. incomplete dominance
b. codominance
c. Mendelian genetics (dominance and recessive
d. multiple alleles
a. incomplete dominance
The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a
different gene locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-
hitchhikers thumb (d). A man is heterozygote for the traits and marries a woman who has
no widows peak and is heterozygote for hitchhikers thumb. What is the man's genotype?
a. HHDD
b. HhDd
c. HHdd
d. hhDD
e. hhdd
b. HhDd
In a monohybrid cross from heterozygous parents, of the offspring would be what
genotypes? Select all that apply.
a. Homozygous recessive
b. Homozygous dominant
,c. Heterozygotes
d. Homozygous recessives
e. Homozygous dominants
f. Heterozygote
a. Homozygous recessive
b. Homozygous dominant
c. Heterozygotes
A and Z are independent events. The probability that A occurs is ¼. The probability that Z
occurs is ¼. What is the probability that both will occur?
a. 1/4
b. 1/8
c. 1/3
d. 1/2
e. 1/16
e. 1/16
If genes are completely linked, all the offspring will be _________.
a. parental
b. dominant
c. hybrids
d. recessive
d. recombinants
a. parental
Determine what statements describe Huntington's disease? Select all that apply.
a. The disease is caused by a delayed action gene
, b. The diseases is autosomal dominant
c. The disease is sex-linked so it is mostly seen in men
d. Offspring have a 50% chance of inheriting the gene
e. It is recessive lethal
a. The disease is caused by a delayed action gene
b. The diseases is autosomal dominant
d. Offspring have a 50% chance of inheriting the gene
What statement describes X-linked traits? Select all that apply.
a. Women can be carriers because they can be heterozygous for the trait
b. X-linked traits are more common in men
c. Males are never carriers since they only receive one X chromosome
d. Males inherit X-linked traits from their fathers
e. Women only have to have one affected gene to show the trait
a. Women can be carriers because they can be heterozygous for the trait
b. X-linked traits are more common in men
c. Males are never carriers since they only receive one X chromosome
Marfan syndrome is a dominant trait. A cross between a homozygous dominant and a
heterozygote would produce what phenotypic ratio?
a. 1:2:1
b. 3:1
c. 2:2
d. 1:3
e. 4:0
e. 4:0
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY GRADED A+ | |
VERIFIED BY EXPERTS .
Low pitched male voices (RR) and a high pitched male voice (rr). Heterozygotes have a
baritone voice. This is an example of _________.
a. incomplete dominance
b. codominance
c. Mendelian genetics (dominance and recessive
d. multiple alleles
a. incomplete dominance
The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a
different gene locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-
hitchhikers thumb (d). A man is heterozygote for the traits and marries a woman who has
no widows peak and is heterozygote for hitchhikers thumb. What is the man's genotype?
a. HHDD
b. HhDd
c. HHdd
d. hhDD
e. hhdd
b. HhDd
In a monohybrid cross from heterozygous parents, of the offspring would be what
genotypes? Select all that apply.
a. Homozygous recessive
b. Homozygous dominant
,c. Heterozygotes
d. Homozygous recessives
e. Homozygous dominants
f. Heterozygote
a. Homozygous recessive
b. Homozygous dominant
c. Heterozygotes
A and Z are independent events. The probability that A occurs is ¼. The probability that Z
occurs is ¼. What is the probability that both will occur?
a. 1/4
b. 1/8
c. 1/3
d. 1/2
e. 1/16
e. 1/16
If genes are completely linked, all the offspring will be _________.
a. parental
b. dominant
c. hybrids
d. recessive
d. recombinants
a. parental
Determine what statements describe Huntington's disease? Select all that apply.
a. The disease is caused by a delayed action gene
, b. The diseases is autosomal dominant
c. The disease is sex-linked so it is mostly seen in men
d. Offspring have a 50% chance of inheriting the gene
e. It is recessive lethal
a. The disease is caused by a delayed action gene
b. The diseases is autosomal dominant
d. Offspring have a 50% chance of inheriting the gene
What statement describes X-linked traits? Select all that apply.
a. Women can be carriers because they can be heterozygous for the trait
b. X-linked traits are more common in men
c. Males are never carriers since they only receive one X chromosome
d. Males inherit X-linked traits from their fathers
e. Women only have to have one affected gene to show the trait
a. Women can be carriers because they can be heterozygous for the trait
b. X-linked traits are more common in men
c. Males are never carriers since they only receive one X chromosome
Marfan syndrome is a dominant trait. A cross between a homozygous dominant and a
heterozygote would produce what phenotypic ratio?
a. 1:2:1
b. 3:1
c. 2:2
d. 1:3
e. 4:0
e. 4:0
