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BIO 105 Exam 2
Terms in this set (11)
Which of the following structures develop from the Mullerian duct?
d. seminiferous tubules
e. fallopian tubes
Melissa has androgen insensitivity and was very upset to learn that she was sterile. Which of the following is most likely her karyotype?
a. 47, XXX
b. 46, XY
c. 45, XO
d. 47, XXY
e. 46, XX
Sickle cell disease (autosomal recessive) runs in Grace's family. On a family pedigree, she saw a darkened circle . This represented
a. A male with sickle cell disease
b. A normal female
c. A carrier
d. A female with sickle cell disease
e. A normal male
a female with sickle cell disease
In dogs, erect ears (E) is dominant to droopy ears (e). The genotype of a dog with erect ears is therefore
e. either a or c
either a or c
For two genes A and B, what are the genotypes of the gametes that a heterozygote would produce? (Assume the genes follow Mendel's Law of Independent Assortment)
a. AB, ab, Ab, aB
b. Aa, Bb
c. AB, ab
d. Ab, aB
e. A, a, B, b
AB, ab, Ab, aB
An Amish couple (both normal) have 4 children. The first three children are normal and the fourth child was born with the disorder Ellis-van Creveld syndrome (EvC). EvC was once referred to as "six-fingered dwarfism" and is caused by a defective gene on chromosome 4. What is the probability that their next child will have EvC?
Amanda is not sure whether Ethan or Jason is the father of her newborn girl, Rosemarie. Rosemarie is type AB, and Amanda is type AB. Ethan is type B and Jason is type O. Which man could be the father?
c. either one
A person with an allele for a recessive phenotype will show the phenotypic trait associated with that allele:
a. depending on the nature of the second allele
b. about one quarter of the time
c. about half the time
d. exactly one third of the time
e. regardless of the nature of the second allele
depending on the nature of the second allele
If two Barr bodies were observed in the nucleus of a human somatic cell, it can be assumed that the person
a. is a female
b. is a male
c. has 3 X chromosomes
d. has Turner syndrome
e. has 3 Y chromosomes
has 3 X chromosomes
For a female to develop hemophilia, her mother:
a. must have hemophilia.
b. must be at least a carrier and her father must have hemophilia.
c. must be at least a hemophilia carrier and her father may be normal.
d. can have normal alleles, but her father must have hemophilia.
e. None of the above are true.
must be at least a carrier and her father must have hemophilia.
Sex-limited genes are:
a. incompletely dominant
b. often affected by hormones
c. dominant in one sex and recessive in the other
d. always dominant in females
e. b and c
often affected by hormones
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