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- 1. Multiple Choice
Which set of parents can most likely produce a child with type O blood?
one parent with type AB blood, and the other parent with type A blood
one parent with type AB blood, and the other parent with type O blood
one parent with heterozygous type A blood, and the other parent with type O blood
one parent with homozygous type A blood, and the other parent with homozygous type B blood
- 2. Multiple Choice
What process produces many
variations in phenotypes?
independent assortment
asexual reproduction
regeneration
cloning
- 3. Multiple Choice
One of the parents of a child has phenylketonuria (PKU), which is caused by recessive alleles. The other parent does not have the PKU alleles. What is the chance that the couple will have a child with phenylketonuria?
0%
50%
75%
100%
- 4. Multiple Choice
What advantage do sexually
reproducing organisms have over
asexually reproducing organisms?
genetic variation
genetic stability
increased fertilization rate
increased reproductive rate
- 5. Multiple Choice
Hitchhiker’s thumb (H) is dominant to no hitchhiker’s thumb (h). A woman who does not have hitchhiker’s thumb marries a man who is heterozygous for hitchhiker’s thumb. What is the probable genotypic ratio of their children?
0% Hh : 100% hh
50% Hh : 50% hh
75% Hh : 25% hh
100 % Hh : 0% hh
- 6. Multiple Choice
This diagram shows a pedigree for a recessive genetic disorder.
What is the genotype of individual 6?
- 7. Multiple Choice
This chart shows the results of several crosses with white-feathered chickens and dark-feathered chickens.
Which cross would be represented as Aa × aa, where (A) represents a dominant allele and (a) represents a recessive allele?
Cross 1
Cross 2
Cross 3
Cross 4
- 8. Multiple Choice
In a particular species of plants, when
the soil pH is greater than 7, blue flowers are produced. However, when the soil pH is less than 7, pink flowers are produced. Which statement best
explains the color change in the plant?
Multiple alleles determine the
color of the flowers.
The change in flower color is a
result of a mutation.
Polygenic inheritance produces
the different flower colors.
The environment influences the
expression of the gene for flower
color.
- 9. Multiple Choice
This diagram shows a diploid cell with
two pairs of homologous chromosomes.
Due to independent assortment, what is the possible genetic make-up of gametes produced by this organism?
- 10. Multiple Choice
Why is meiosis important for sexual reproduction?
It allows the zygote formed from fertilization to have triple the chromosome
number of the organism.
It allows gametes to have twice the original number of chromosomes of the
organism.
It allows gametes to have half the original number of chromosomes of the
organism.
It allows the zygote formed from fertilization to have half the original
number of chromosomes of the organism.
- 11. Multiple Choice
Which process produces the most variation within a species?
asexual reproduction
sexual reproduction
mitosis
cloning
- 12. Multiple Choice
The inheritance of short wings in Drosophila fruit flies is an x-linked, recessive
trait. Which would most likely result if a short-winged female mates with a
long-winged male?
All offspring will be short-winged.
All females will be long-winged, and all males will be short-winged.
All females will be short-winged, and all males will be long-winged.
Half of the males and females will be short-winged, and half will be
long-winged.
- 13. Multiple Choice
Which would most likely produce a mutation that is passed on to offspring?
radiation changing the DNA sequence in skin cells
a gamete with an extra chromosome forming
tobacco smoke altering the genes in lung cells
exposure to chemicals altering nerve cell function
- 14. Multiple Choice
How are sexual reproduction and asexual reproduction different?
Sexual reproduction produces offspring identical to the parents, but asexual
reproduction produces offspring with traits from both parents.
Asexual reproduction produces offspring identical to the parents, but sexual
reproduction produces offspring with traits from both parents.
Sexual reproduction only occurs in multicellular organisms, but asexual
reproduction only occurs in unicellular organisms.
Asexual reproduction only occurs in multicellular organisms, but sexual
reproduction only occurs in unicellular organisms.
- 15. Multiple Choice
Which characteristic is present in offspring produced by sexual reproduction, but is
missing in offspring produced by asexual reproduction?
an identical copy of parent chromosomes
twice the number of parent chromosomes
only half the number of parent chromosomes
an independent assortment of parent chromosomes
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