Genetics 2 Question Preview (ID: 13718)


Heredity. TEACHERS: click here for quick copy question ID numbers.

What is a purpose of cell division?
a) making energy for cell activities
b) communicating a cell's health
c) repair of damaged tissues
d) replacement of a cell membrane

The dominant allele for cheek dimples is D; If a person does not have cheek dimples, which of the following genotypes cannot be that of one of his or her parents?
a) Dd
b) dd
c) DD
d)

Which statement about recessive traits is true?
a) Recessive traits are only expressed in every other generation of offspring.
b) Recessive traits are only expressed in individuals when they become weak or unhealthy.
c) Recessive traits can only be inherited from the parent of the same gender as the offspring.
d) Recessive traits can only be expressed when an individual receives recessive alleles from both paren

Which statement about recessive traits is true?
a) One need not receive any recessive alleles for a trait in order to express the recessive trait.
b) One must receive exactly one recessive allele for a trait in order to express the recessive trait.
c) One needs to receive at least one recessive allele for a trait in order to express the recessive tra
d) One must receive two recessive alleles for a trait in order to express the recessive trait.

The dominant allele for tongue-rolling is T; Which of the following allele pairs will result in the recessive allele being expressed?
a) T from the mother and t from the father
b) t from the mother and T from the father
c) T from the mother and T from the father
d) t from the mother and t from the father

The dominant allele for dimples is D; Which of the following allele pairs will result in the recessive allele being expressed?
a) D from the father and d from the mother
b) d from the father and d from the mother
c) D from the father and D from the mother
d) d from the father and D from the mother

Selena has the hair color genotype BB. Both of her parents have the hair color genotype Bb. What does this indicate about the heredity?
a) Offspring inherit only their parents' dominant traits.
b) The traits offspring inherit are determined by the father.
c) Offspring inherit half their genes from each parent.
d) The traits offspring inherit have little to do with their parents' genes.

Josh has a widow's peak (Ww). His mother also has a widow's peak (WW). His father does not have a widow's peak (ww). What does this indicate about the heredity of Josh's widow's pe
a) He received both of his alleles for this particular trait from his father.
b) He received both of his alleles for this particular trait from his mother.
c) He received a dominant allele from his father and a recessive allele from his mother.
d) He received a dominant allele from his mother and a recessive allele from his father.

Bob has the eye color genotype Bb. His mother has the eye color genotype bb. His father has the eye color genotype Bb. What does this indicate about the heredity of eye color?
a) Each person has two alleles for eye color.
b) The B allele is more easily passed on than the b allele.
c) If one has a B allele and a b allele, the b allele will dominate.
d) Male children inherit their eye color alleles from their father.

Matthew's father carries the blood-type alleles A and B. His mother carries two copies of the blood-type allele O. Which gene combinations might Matthew have?
a) AB or OO
b) AO or BO
c) OO, AO, or BO
d) AB, OO, AO, or BO

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