Free Printable Test in Ten: Inheritance

Worksheets

Test in Ten: Inheritance

Total questions: 26

Worksheet time: 42mins

Name

Class

Date

Aa, DD, bB, yy are all examples of

genotypes

phenotypes

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

recessive

dominant

lower case letter

both

T - tall and t = short
In the punnett square below, what belongs in the missing square

Aa is

homozygous

heterozygous

Which of the following genotypes is homozygous dominant?

Which of the following genotypes is heterozygous?

In a pedigree, what shape represents a male?

circle

square

triangle

diamond

The passing of DNA from parents to offspring

Generation

Heredity

Inheritance

Traits

What is a gene?

An entire chromosome that codes for a trait

a piece of clothing

a piece of a DNA on chromosome that codes for a trait

Chemical messengers in your brain that code for a trait

10.

Segments of DNA are called _______________________

Genes

Nuclei

genotypes

Chromosomes

11.

What is a recessive allele?

A trait that is always shown (capital letter)

A trait that can be hidden (lower case letter)

Alleles that are the same

Alleles that are different

12.

What is a dominant allele?

A trait that is always shown (capital letter)

A trait that can be hidden (lower case letter)

Alleles that are the same

Alleles that are different

13.

_{How many are tall?}

14.

What is NOT an inherited trait of humans?

Favorite type of music

Freckles

Hair color

Height

15.

A hitched thumb is a recessive trait. A person with a hitched thumb would have a genotype of?

16.

Each organism has 2 alleles for a particular trait. Where do these two alleles come from?

One from each parent

Both from one parent

Alleles do not come from parents

The kidney

17.

The ability to roll your tongue is a dominant trait. If both parents are heterozygous for tongue rolling and they have 8 children together, is it possible that they could have children who are unable to roll their tongues?

Yes

18.

What is the genotype for #15?

19.

What is the genotype for #16?

20.

A male heterozygous for widow’s peak marries a female without a widow’s peak.

Widow’s peak is a dominant trait (H) not having a widow’s peak is recessive (h).

What is the male's genotype?

Widow's Peak

No Widow's Peak

21.

Round seeds (R) are dominant to wrinkled seeds (r) in pea plants. If two heterozygous parents are crossed as shown above, what percentage of offspring would have round seeds?

50%

75%

100%

22.

A partial Punnett square is shown below. Which of the following statements describes the parental genotypes that would result in this Punnett square?

Both parents are heterozygous.

One parents is homozygous dominant, the other is heterozygous.

One parents is homozygous recessive, the other is heterozygous.

Both parents are homozygous dominant.

23.

In mussels, brown coloring (B) is dominant and blue coloring (b) is recessive. Which cross would have 100% of offspring with blue color?

Bb x Bb

BB x bb

bb x bb

BB x BB

24.

The pedigree shows the inheritance of sickle cell anemia. Which couple has the greatest chance of having a child that is affected?

25.

The pedigree shows colorblindness. How many individuals in the pedigree are affected by colorblindness?

26.

Peppered moths come in light and dark colors. Light moths are more common, since they blend in with the light bark of the trees they live on. If pollution darkens the color of the bark, what does natural selection predict will happen to the moths?

Their color will remain light gray

Their color will turn dark gray

Their wings will get shorter

Their wings will get longer

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Test in Ten: Inheritance

Total questions: 26

Worksheet time: 42mins

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