WorksheetsGenetics Quiz 3
Total questions: 10
Worksheet time: 5mins
The diagram shows the X chromosomes in a female fruit fly and the X and Y chromosomes in a male fruit fly.
The two fruit flies are crossed with each other. The female offspring of the fruit flies will receive which pair of chromosomes?
A
B
C
D
A pea plant with homozygous genes for round seeds is crossed with a pea plant that is homozygous for wrinkled seeds.
Which statement correctly predicts the results of the genetic cross?
All the offspring will have the genotype RR.
All the offspring will have the genotype Rr.
Half the offspring will have the genotype RR and half will have rr.
All the offspring will have the genotype rr.
Half the offspring will have the genotype Rr, one quarter will be RR and one quarter will be rr.
If Jessica has blue eyes (bb) and both of her parents have brown eyes (Bb), which of the following statements is true?
Jessica inherited one recessive form of the gene from each parent.
Jessica inherited both genes from her mother.
Jessica inherited one dominant form of the gene from each parent.
Jessica inherited both genes from her father.
Which statement best describes the pattern of inheritance that produces 100% red-flowered offspring when a red flower is crossed with a white flower?
Both red flowers and white flowers are dominant.
Both red flowers and white flowers are recessive.
Red flowers are dominant and white flowers are recessive.
Red flowers are recessive and white flowers are dominant.
In guinea pigs, being hairless is a recessive trait. If two heterozygous hairy guinea pigs reproduce, what are the chances that they will have a hairless offspring?
0%
25%
50%
75%
100%
Hawaiian happy face spiders from the island of Maui can have different markings, as shown below. A single gene determines the marking on the spiders. A plain spider is crossed with a patterned spider. The patterned spider is homozygous. The pattern allele is dominant.
What percentage of the offspring from this cross are expected to be patterned instead of plain?
0%
25%
50%
75%
100%
A partial Punnett square is shown. Which of the following statements describes the parental genotypes that would result in this Punnett square?
Both parents are heterozygous.
Both parents are homozygous dominant.
Both parents are homozygous recessive.
One parent is homozygous dominant and the other parent is heterozygous.
One parent is homozygous recessive and the other parent is heterozygous.
Height is a polygenic trait in humans. Which of the following statements best explains the genetics of this trait?
The gene for height is located on the Y chromosome.
The gene for height is located on the X chromosome.
Height is controlled by a single dominant gene.
Height is controlled by more than one gene.
Humans may have type O, A, B, or AB blood. This blood trait is determined by:
genes on X chromosomes only.
a double crossover on the X chromosome.
multiple alleles.
three homologous chromosomes.
In the winter, the fur of the arctic fox is white. In the summer, the fur darkens to a reddish brown. What most likely causes the fur of the fox to change color?
the fox's age
amount of sunlight present
the fox's habitat
the fox's genes
