BIOL 133 Week 8 Quiz

BIOL 133 Week 8 Quiz | Assignment Help | APUS  

Week 8 Quiz

Question 1 of 10

Low pitched male voices (RR) and a high-pitched male voice (rr). Heterozygotes have a baritone voice. This is an example of _________.

o   incomplete dominance

o   codominance

o   Mendelian genetics (dominance and recessive

o   multiple alleles

Question 2 of 10

Sickle cell anemia is a recessive trait. A cross between two heterozygotes would produce what phenotypic ratio?

o   1:2:1

o   3:1

o   2:2

o   1:3

o   4:0

Question 3 of 10

If genes are completely linked, all the offspring will be _________.

o   recessive

o   recombinants

o   dominant

o   parental

o   hybrids

Question 4 of 10

In a monohybrid cross from heterozygous parents, of the offspring, would be what genotypes? Select all that apply.

o   Homozygous recessive

o   Homozygous dominant

o   Heterozygotes

o   Homozygous recessives

o   Homozygous dominants

o   Heterozygote

Question 5 of 10

 If a cross for widow’s peak was conducted between a homozygous dominant and a heterozygote, it is expected that all organisms of the offspring will have widow’s peak. Even though all have the widow’s peak, they can _________.

o   have the exact same alleles

o   be phenotypically different

o   have more than one allele from a parent for the trait

o   be genotypically different

Question 6 of 10

 What the statement describes X-linked traits? Select all that apply.

o   Women can be carriers because they can be heterozygous for the trait

o   X-linked traits are more common in men

o   Males are never carriers since they only receive one X chromosome

o   Males inherit X-linked traits from their fathers

o   Women only have to have one affected gene to show the trait

Question 7 of 10

 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?

o   HHDD

o   HhDd

o   HHdd

o   hhDD

o   hhdd

Question 8 of 10

Marfan syndrome is a dominant trait. A cross between a homozygous dominant and a heterozygote would produce what phenotypic ratio?

 o   1:2:1    

o   3:1       

o   2:2       

o   1:3     

o   4:0

Question 9 of 10

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?

o   1/4       

o   1/8       

o   1/3       

o   1/2

o   1/16

 Question 10 of 10

Determine what statements describe Huntington’s disease? Select all that apply.

o   The disease is caused by a delayed action gene

o   The diseases is autosomal dominant

o   The disease is sex-linked so it is mostly seen in men

o   Offspring have a 50% chance of inheriting the gene

o   t is recessive lethal