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NON-MENDELIAN INHERITANCE

Terms in this set (17)

A purebred purple flowering plant is crossed with a purebred white flowering plant, and they produce offspring that have purple flowers. Which is the trait for purple flowers?

dominant
recessive
codominant
blended
dominant
Which statement best describes the potential confusion in early studies of inheritance patterns for skin color?

The polygenic trait appeared as incomplete dominance.
The polygenic trait appeared as codominance.
Incomplete dominance appeared to be a polygenic trait.
Codominance appeared to be a polygenic trait.
The polygenic trait appeared as incomplete dominance.
Which was not a result of the 1898 discovery of the four blood types?

improved blood transfusion safety
effective blood preservation solutions developed
elements of blood separated via centrifuge
all blood types made compatible with each other
all blood types made compatible with each other
Which inheritance pattern results when parents are crossed for pure traits and the resulting offspring have traits that appear to blend?

incomplete dominance
codominance
Mendelian inheritance
polygenic inheritance
incomplete dominance
Skin color, fur color, and height are examples of which inheritance pattern?

Mendelian inheritance
incomplete dominance
codominance
polygenic inheritance
polygenic inheritance
If a red cow (homozygous dominant) is crossed with a white cow (homozygous dominant), what alleles will the offspring have?
Rw
RW
rW
rw
RW
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?
25 percent
50 percent
75 percent
100 percent
100 percent
Which statement best describes human eye color?

an incompletely dominant trait that follows non-Mendelian inheritance patterns
a polygenic trait that follows non-Mendelian inheritance patterns
an incompletely dominant trait that follows Mendelian inheritance patterns
a polygenic trait that follows Mendelian inheritance patterns
a polygenic trait that follows non-Mendelian inheritance patterns
The graph demonstrates the quantitative variation for skin pigmentation.

mc011-1.jpg

Which conclusion is supported by the graph?

NOT More than half of the population has the central skin pigmentation.
The lightest and the darkest skin pigmentations are equally possible.
NOT The central skin pigmentation makes up more of the population than the rest of the skin pigmentation groups combined.
NOT Fewer people have skin pigmentation lighter than the central peak than people who have pigmentation darker than the central peak.
...
Which represents polygenic inheritance of traits?

a cow that has red and white dominant coloring
a mix of blue, green, and brown eye colors
a plant that has pink flowers produced from a plant that has red flowers and a plant that has white flowers
a plant that has green seeds produced from a plant that has yellow seeds and a plant that has green seeds
a mix of blue, green, and brown eye colors
An example of a polygenic trait is
eye color, which is controlled by many interacting genes
If blood is in short supply, which blood type would be the most beneficial to have on hand if someone needed a blood transfusion?
O+
O-
AB+
AB-
O-
Which type of traits vary quantitatively due to the interaction of multiple genes?

polygenic
codominant
incomplete dominant
dominant
polygenic
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?

Skin color, a polygenic trait, is also determined by environmental factors.
Skin color, a polygenic trait, is also determined by the sex of the individual.
Skin color, a trait that demonstrates incomplete dominance, is also determined by environmental factors.
Skin color, a trait that demonstrates incomplete dominance, is also determined by the sex of the individual.
Skin color, a polygenic trait, is also determined by environmental factors.
If you inherit the genotype AO for blood from your parents, what blood type do you have?

A
B
AB
O
A
How did the discovery of the rhesus factor affect society?

More patients died from having a transfusion with the wrong rhesus factor.
New treatments during pregnancy could prevent harm to the developing child.
Less donated blood could be used in the treatment of patients.
The number of blood types was reduced by half.
New treatments during pregnancy could prevent harm to the developing child.
Why is it important to know a person's rhesus factor before a blood transfusion?

A patient who is Rh+ can receive only Rh- blood.
A patient who is Rh- can receive only Rh+ blood.
A patient who is Rh+ can receive only Rh+ blood.
A patient who is Rh- can receive only Rh- blood.
A patient who is Rh- can receive only Rh- blood.
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