Heredity — Test Answers

25 verified answers
3

If a person has type B blood, which statement describes the antibodies present in his or her blood?

A
Both anti-A and anti-B antibodies are present.
B
Only anti-A antibodies are present.
C
Only anti-B antibodies are present.
D
Neither anti-A nor anti-B antibodies are present.
5

Which was most likely an effect on society that resulted from improvements in blood handling during World War I and World War II?

A
More organizations spoke out against the war.
B
More donations were needed as a result of poor storage techniques.
C
More soldiers died as a result of incorrect blood typing.
D
More soldiers who had lost a limb returned home.
6

Which of Mendel’s generations was allowed to self-pollinate?

A
cap f sub 1 generation and cap f sub 2 generation
B
cap p generation and cap f sub 2 generation
C
cap f sub 1 generation
D
cap p generation
7

In the cap f sub 2 generation of Mendel’s crosses,

A
all plants had both the dominant and recessive alleles.
B
all plants had the dominant trait.
C
half of the plants had the dominant allele.
D
one in four plants had two alleles for the recessive trait.
9

Which Punnett square represents a cross between two parents that are heterozygous for purple flowers?

A
Image with description A Punnett square is shown. The columns are labeled Upper F and Upper F. The rows are labeled Upper F and f. Clockwise from upper left the boxes contain: Upper F Upper F, Upper F Upper F, Upper F f, Upper F f.
B
Image with description A 2 by 2 Punnett square with column headers uppercase F and lowercase f and row labels uppercase F and lowercase f. The four boxes show FF, Ff, Ff, and ff.
C
Image with description A Punnett square is shown. The columns are labeled Upper F and Upper F. The rows are labeled Upper F and f. Clockwise from upper left the boxes contain: Upper F Upper F, Upper F Upper F, Upper F f, Upper F f.
D
Image with description A 2 by 2 Punnett square with column headers lowercase f and lowercase f and row labels lowercase f and lowercase f. The four boxes show ff, ff, ff, and ff.
11

Glaucoma is a leading cause of blindness. Studies have linked a common form of glaucoma to three genes and more than 20 genetic loci. Which best describes glaucoma?

A
a polygenic trait that is influenced by the alleles of several genes
B
a recessive trait that requires multiple recessive alleles to be expressed
C
a codominant trait that is expressed more often when more dominant alleles are present
D
a dominant trait that depends on the presence of only one of many dominant alleles
12

Which allele combination represents a male who has an cap x -linked recessive disorder?

A
cap x to the r th power cap x to the r th power
B
cap x to the r th power cap y
C
cap x to the cap r th power cap y
D
cap x to the cap r th power cap x to the r th power
13

A scientist is studying fruit fly wings. Straight wings are dominant, and curly wings are recessive. Which statement correctly describes the cap f sub 1 generation if a straight-winged parent is crossed with a curly-winged parent and if both parents are true breeding?

A
The offspring will have two genes for straight wings.
B
The offspring will produce only gametes that have genes for curly wings.
C
The offspring will have one allele for straight wings and one allele for curly wings.
D
The offspring will have only one kind of allele for the gene that determines wing type.
15

A purebred plant that has yellow flowers is crossed with a purebred plant that has white flowers. All the offspring have yellow flowers. Which conclusion about yellow flowers is supported by these results?

A
Yellow flower color is a monohybrid trait.
B
Yellow flower color is a recessive trait.
C
Yellow flower color is a dominant trait.
D
Yellow flower color is a heterozygous trait.
16

A pea plant exhibits a recessive trait. Which statement is most likely true about the plant?

A
The plant is identical to its parent plant.
B
The plant has different alleles for the gene that codes for the trait.
C
The plant has two identical alleles for the gene that codes for the trait.
D
The plant does not have the same genes for the trait as its parent plant.
19

Which conclusion is supported by the graph?

A
Fewer people have skin pigmentation lighter than the central peak than people who have pigmentation darker than the central peak.
B
The central skin pigmentation makes up more of the population than the rest of the skin pigmentation groups combined.
C
More than half of the population has the central skin pigmentation.
D
The lightest and the darkest skin pigmentations are equally common in the population.

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