AnswersBiology B - Q1Non-Mendelian Inheritance

Non-Mendelian Inheritance Answers

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Which inheritance pattern results when parents with pure traits are crossed and the resulting offspring have traits that appear to be a blend of the parents' traits?

A
incomplete dominance
B
codominance
C
Mendelian inheritance
D
polygenic inheritance
2
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Which represents polygenic inheritance of traits?

A
a cow that has red and white dominant coloring
B
a mix of blue, green, and brown eye colors
C
a plant that has pink flowers produced from a plant that has red flowers and a plant that has white flowers
D
a plant that has green seeds produced from a plant that has yellow seeds and a plant that has green seeds
3

Why is it important to know a person's rhesus factor before a blood transfusion?

A
A patient who is Rh+ can receive only Rh– blood.
B
A patient who is Rh– can receive only Rh+ blood.
C
A patient who is Rh+ can receive only Rh+ blood.
D
A patient who is Rh– can receive only Rh– blood.
4

If you inherit the genotype AO for blood from your parents, what blood type do you have?

A
A
B
B
C
AB
D
O
5

Which statement best describes human eye color?

A
an incompletely dominant trait that follows non-Mendelian inheritance patterns
B
a polygenic trait that follows non-Mendelian inheritance patterns
C
an incompletely dominant trait that follows Mendelian inheritance patterns
D
a polygenic trait that follows Mendelian inheritance patterns
6

The graph demonstrates the quantitative variation for skin pigmentation.Which conclusion is supported by the graph?

Question illustration
A
More than half of the population has the central skin pigmentation.
B
The lightest and the darkest skin pigmentations are equally common in the population.
C
The central skin pigmentation makes up more of the population than the rest of the skin pigmentation groups combined.
D
Fewer people have skin pigmentation lighter than the central peak than people who have pigmentation darker than the central peak.
7

John and Pat are identical twins with identical DNA. John works in a movie theater, and Pat works as a lifeguard. They have very different skin pigmentation. Which is the best explanation of the difference?

A
Skin color, a polygenic trait, is also determined by environmental factors.
B
Skin color, a polygenic trait, is also determined by the sex of the individual.
C
Skin color, a trait that demonstrates incomplete dominance, is also determined by environmental factors.
D
Skin color, a trait that demonstrates incomplete dominance, is also determined by the sex of the individual.
8

The allele for curly hair is incompletely dominant. If a mother is homozygous for curly hair and the father is homozygous for straight hair, what percentage of the offspring will exhibit characteristics of both parents?

A
25 percent
B
50 percent
C
75 percent
D
100 percent
9

Skin color, fur color, and height are examples of which inheritance pattern?

A
Mendelian inheritance
B
incomplete dominance
C
codominance
D
polygenic inheritance
10

How did the discovery of the rhesus factor affect society?

A
More patients died from having a transfusion with the wrong rhesus factor.
B
New treatments during pregnancy could prevent harm to the developing child.
C
Less donated blood could be used in the treatment of patients.
D
The number of blood types was reduced by half.

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