AnswersIS - O - 3490 - The Living Earth B CP OnlineNon-Mendelian Inheritance

Non-Mendelian Inheritance Answers

10 verified answers2 views
1
Free Preview

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
2
Free Preview

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

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.
4

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
5

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?

A
dominant
B
recessive
C
codominant
D
blended
6

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

A
Mendelian inheritance
B
incomplete dominance
C
codominance
D
polygenic inheritance
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

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.
9

Which type of traits vary quantitatively due to the interaction of multiple genes?

A
polygenic
B
codominant
C
incomplete dominant
D
dominant
10

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
11

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.
12

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
13

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.
14

What is one of the reasons why Gregor Mendel chose to study pea plants?

A
They exhibit only a single trait.
B
They produce flowers.
C
They grow very slowly.
D
They reproduce sexually.
15

Mendel crossed two plants that were heterozygous for the trait of flower color. Which genotypes could he have used to represent the cross?

A
PP ´ PP
B
Pp ´ Pp
C
pp ´ pp
D
Pp ´ PP
16

There are two different alleles for flower color, P and p. The image shows a purple sweet pea that is labeled with its two alleles for petal color.Which is the genotype of the sweet pea?

Question illustration
A
heterozygous dominant
B
heterozygous recessive
C
homozygous dominant
D
homozygous recessive
17

Gregor Mendel crossed homozygous tall plants (TT) with homozygous short plants (tt). All the resulting offspring were tall. From these results, what conclusion did Mendel draw?

A
Tallness is a dominant trait.
B
The word homozygous always means dominant.
C
Only dominant alleles are passed on to offspring.
D
The alleles of the offspring were recessive.
18

The offspring of a particular cross are 100 percent heterozygous for the trait of plant height. What were the most likely genotypes of the parents?

A
Tt ´ tt
B
Tt ´ Tt
C
tt ´ tt
D
TT ´ tt

Did you find these answers helpful?

More from this Course

Quiz
10 verified answers

Sex-linked Inheritance

Quiz
10 verified answers

Non-Mendelian Inheritance

Quiz
10 verified answers

Non-Mendelian Inheritance

Non-Mendelian Inheritance Answers — IS - O…