This gene linkage map shows the order of genes A, B, and C. Which of the following statements about the genes is true?

The distance between A and B is 14.5 map units.

A and B cross over 2.5% of the time.

A and C are linked 8.5% of the time.

B and C are most likely to be inherited together.

Thomas Morgan’s research with fruit flies determined that...

traits sometimes are inherited as a group.

alleles always assort independently.

chromosomes are inherited as a group.

genes never assort independently.

Two genes cross over 6% of the time. This percentage means that the genes are

not inherited together in 6 out of 100 offspring.

inactivated in 6 out of 100 offspring.

incompletely dominant in 6 out of 100 offspring.

on sex-chromosomes in 6 out of 100 offspring.

Suppose a person is a carrier for a genetic disorder. Which of the following phrases about this person is true?

does not have the disorder but can pass it on

will develop the disorder only late in life

cannot pass the disorder to sons, just daughters

the allele is not passed on due to Y chromosome inactivation

Some members of a family have a recessive sex-linked disorder. Which of the following statements about the family would be true?

Only females would be carriers.

All males would have the disorder.

Only males would have the disorder.

What is the main reason that sex-linked disorders are most often observed in males?

The Y chromosome cannot mask alleles on the X chromosome.

The X chromosome only has genes for genetic disorders.

The Y chromosome cannot have genes that cause genetic disorders.

The X chromosome has genes only for sex determination.

Since the allele for colorblindness is located on the X chromosome, colorblindness

None of the answers are correct.

A person who is heterozygous for a disorder caused by recessive alleles is a carrier of the disorder. A carrier is a person who

does not have the disorder but can pass it on to offspring.

can develop the disorder later in life but cannot pass it on.

has a dominant normal allele that has been inactivated.

passes the disorder to offspring on the Y chromosome only.

Identical twins who are raised apart can have differences that last a lifetime. This is evidence that

environment and genotype interact to affect phenotype.

phenotype differences happen through epistatic genes.

A female is born with attached earlobes, which is a recessive phenotype. Which of the following statements about her parents must be true?

Both parents have the recessive allele.

Neither has the codominant allele.

Her father has an inactivated allele.

Her mother carries the dominant allele.

Chapter 7-Extending Mendelian Genetics

Authored by Sarah Munn

Biology

10th Grade

NGSS covered

Used 80+ times

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

A person who has a disorder caused by a recessive allele is...

considered a carrier of the disorder.

homozygous for the recessive allele.

unable to pass the allele to offspring

certain to have offspring with the disorder

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Gene expression is influenced by many factors. Which of the following is a factor in gene expression?

karyotype

pedigree

environment

phenotype

Tags

NGSS.HS-LS3-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This Punnett square shows a cross between two parents who have the genotype Ss for a genetic disorder caused by a recessive allele. Which of the following will have the genetic disorder?

Ss parent

Ss offspring

SS offspring

ss offspring

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Two parents have the genotype Gg for a genetic disorder caused by a dominant allele. What is the chance that any of their children will inherit the disorder?

25%

50%

75%

100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

For an XX female to express a recessive sex-linked trait, she must have...

a Y chromosome.

an inactivated allele.

two recessive alleles.

two dominant alleles.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Human height occurs in a continuous range because it is affected by the interaction of several genes, making it a...

autosomal trait.

sex-linked trait.

polygenic trait.

codominant trait.

Tags

NGSS.HS-LS3-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Suppose a mouse is
• homozygous for alleles that produce black fur and
• homozygous for alleles of an epistatic gene that prevents fur coloration.
What color fur will the mouse have?

all white

mostly black

entirely gray

black and white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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Chapter 7-Extending Mendelian Genetics

A person who has a disorder caused by a recessive allele is...

Gene expression is influenced by many factors. Which of the following is a factor in gene expression?

This Punnett square shows a cross between two parents who have the genotype Ss for a genetic disorder caused by a recessive allele. Which of the following will have the genetic disorder?

Two parents have the genotype Gg for a genetic disorder caused by a dominant allele. What is the chance that any of their children will inherit the disorder?

For an XX female to express a recessive sex-linked trait, she must have...

Human height occurs in a continuous range because it is affected by the interaction of several genes, making it a...

Suppose a mouse is • homozygous for alleles that produce black fur and • homozygous for alleles of an epistatic gene that prevents fur coloration. What color fur will the mouse have?

This gene linkage map shows the order of genes A, B, and C. Which of the following statements about the genes is true?

Thomas Morgan’s research with fruit flies determined that...

Two genes cross over 6% of the time. This percentage means that the genes are

Access all questions and much more by creating a free account

Popular Resources on Wayground

Discover more resources for Biology

Suppose a mouse is
• homozygous for alleles that produce black fur and
• homozygous for alleles of an epistatic gene that prevents fur coloration.
What color fur will the mouse have?