Unit 5 Exam: Inheritance of Traits v1

1

An egg cell is an example of which type of cell?

1

A sperm cell is an example of which type of cell?

1

Which of these is produced after an egg is fertilized by a sperm cell?

1

This type of cell has one set of chromosomes and a ploidy of 1n:

1

This type of cell has two sets of chromosomes and a ploidy of 2n:

1

This process happens ONLY in sex cells and is responsible for genetic variation:

2

How many chromosomes does a human zygote contain?

2

If a fruit fly zygote has 8 chromosomes, how many chromosomes are in a haploid fruit fly cell?

2

If a haploid chupacabra cell has 50 chromosomes, how many chromosomes will a diploid chupacabra cell have?

The next set of questions is about Mendelian traits.

2

A homozygous white wolf is crossed with a heterozygous black wolf. Which allele is dominant for fur color?

In certain breeds of dogs, the gene for fur color has two alleles. The dominant allele (G) codes for grey fur and the recessive allele (g) codes for brown fur. A heterozygous grey male is crossed with a brown female. Respond to the following questions about that cross.

0

Complete the Punnett square showing the cross between the dogs.

2

Show the genotypic ratios by dragging the correct number to each possible genotype.

4
3
2
1
0

GG
Gg
gg

2

Show the phenotypic ratios by dragging the correct number to each possible phenotype.

4
3
2
1
0

gray
brown

Blue eyes are dominant to red eyes in rabbits. A heterozygous blue-eyed male rabit is crossed with a red-eyed female rabbit. Respond to the following questions about that cross. 

0

Complete the Punnett square showing the cross between the rabbits.

2

Show the phenotypic ratios by dragging the correct number to each possible phenotype.

4
3
2
1
0

blue eyes
red eyes

2

Show the genotypic ratios by dragging the correct number to each possible genotype.

4
3
2
1
0

BB
Bb
bb

The next set of questions is about Non-Mendelian traits.

2

In a certain breed of rabbits, crossing a black rabbit with a white rabbit will produce gray offspring. This is an example of:

2

In a certain species of plants, crossing a plant with red flowers and a plant with white flowers will produce a offspring with white patches and red patches on their flowers. This is an example of:

2

A colorblind male and a female who is a carrier for colorblindness have a child. The child has a 50% chance of being colorblind. The allele for colorblindness is recessive. This is an example of:

0

Snapdragon plants are incompletely dominant for color. They have the phenotypes red, white, and pink. The red and white flowers are homozygous, while the pink flowers are heterozygous. Complete a Punnett square showing a cross between a plant with red flowers and a plant with white flowers..

3

Use the Punnett square from #5 to place the predicted percentages for each offspring phenotype.

100%
75%
50%
25%
0%

Red
White
Pink
Red & White patches

0

In some chickens, the gene for feather color is controlled by codominance. There are two alleles: black (B) and white (W). For an individual to be black or white , they must be homozygous (BB or WW) for that allele. An individual that inherits one of each allele will be speckled. Complete a Punnett square showing a cross between a black chicken and a speckled chicken.

3

Use the Punnett square from #7 to place the predicted percentages for each offspring phenotype.

100%
75%
50%
25%
0%

Black
White
Gray
Black & White speckles

0

Human blood typing is an example of a trait with multiple alleles. It is also an example of codominance. There are two dominant alleles (A & B) and one recessive allele (O). If an individual is heterozygous with an A and B allele, both will be expressed.

Complete a Punnett square showing a cross between a Type AB father and a Type O mother.

3

Use the Punnett square from #9 to place the predicted percentages for each possible offspring phenotype.

100%
75%
50%
25%
0%

Type A
Type B
Type AB
Type O

0

Hemophelia is an example of an X chromsome-linked trait. The allele for normal blood clotting is dominant, while the allele for hemophelia is recessive.

Complete a Punnett square showing a cross between female who is a carrier for hemophelia and a male who has hemophelia.

3

Use the Punnett square from #11 to place the predicted percentages for each possible offspring phenotype.

100%
75%
50%
25%
0%

Female with normal blood clotting
Female with hemophelia
Male with normal blood clotting
Male with hemophelia

4

The pedigree below tracks the appearance of a recessive trait:
Match each individual on the left with the correct genotype on the right.

Dad
Mom
Sister
Brother 1

Definitely homozygous dominant
Definitely heterozygous
Definitely homozygous recessive
Could be homozygous dominant or heterozygous

4

The pedigree below tracks the appearance of a recessive trait:
Match each individual on the left with the correct genotype on the right.

I-2
II-2
II-3
III-6

Definitely homozygous dominant
Definitely heterozygous
Definitely homozygous recessive
Could be homozygous dominant or heterozygous

1

How is III-1 related to II-4?

2

Which of the following individuals are carriers? (Choose ALL that apply)

1

Select the correct definitions.

3

What are clues that a trait is recessive? (Choose ALL that apply)

1

How many children did I-1 and I-2 have?

1

An egg cell is an example of which type of cell?

A sperm cell is an example of which type of cell?

Which of these is produced after an egg is fertilized by a sperm cell?

This type of cell has one set of chromosomes and a ploidy of 1n:

This type of cell has two sets of chromosomes and a ploidy of 2n:

This process happens ONLY in sex cells and is responsible for genetic variation:

How many chromosomes does a human zygote contain?

If a fruit fly zygote has 8 chromosomes, how many chromosomes are in a haploid fruit fly cell?

If a haploid chupacabra cell has 50 chromosomes, how many chromosomes will a diploid chupacabra cell have?

A homozygous white wolf is crossed with a heterozygous black wolf. Which allele is dominant for fur color?

Complete the Punnett square showing the cross between the dogs.

Show the genotypic ratios by dragging the correct number to each possible genotype.

Show the phenotypic ratios by dragging the correct number to each possible phenotype.

Complete the Punnett square showing the cross between the rabbits.

Show the phenotypic ratios by dragging the correct number to each possible phenotype.

Show the genotypic ratios by dragging the correct number to each possible genotype.

In a certain breed of rabbits, crossing a black rabbit with a white rabbit will produce gray offspring. This is an example of:

In a certain species of plants, crossing a plant with red flowers and a plant with white flowers will produce a offspring with white patches and red patches on their flowers. This is an example of:

A colorblind male and a female who is a carrier for colorblindness have a child. The child has a 50% chance of being colorblind. The allele for colorblindness is recessive. This is an example of:

Snapdragon plants are incompletely dominant for color. They have the phenotypes red, white, and pink. The red and white flowers are homozygous, while the pink flowers are heterozygous. Complete a Punnett square showing a cross between a plant with red flowers and a plant with white flowers..

Use the Punnett square from #5 to place the predicted percentages for each offspring phenotype.

Use the Punnett square from #7 to place the predicted percentages for each offspring phenotype.

Use the Punnett square from #9 to place the predicted percentages for each possible offspring phenotype.

Hemophelia is an example of an X chromsome-linked trait. The allele for normal blood clotting is dominant, while the allele for hemophelia is recessive. Complete a Punnett square showing a cross between female who is a carrier for hemophelia and a male who has hemophelia.

Use the Punnett square from #11 to place the predicted percentages for each possible offspring phenotype.

The pedigree below tracks the appearance of a recessive trait:Match each individual on the left with the correct genotype on the right.

The pedigree below tracks the appearance of a recessive trait:Match each individual on the left with the correct genotype on the right.

How is III-1 related to II-4?

Which of the following individuals are carriers? (Choose ALL that apply)

Select the correct definitions.

What are clues that a trait is recessive? (Choose ALL that apply)

How many children did I-1 and I-2 have?

This pedigree tracks hemophelia in a family. How many of III-3's sons have hemophelia?

Hemophelia is an example of an X chromsome-linked trait. The allele for normal blood clotting is dominant, while the allele for hemophelia is recessive.

Complete a Punnett square showing a cross between female who is a carrier for hemophelia and a male who has hemophelia.

The pedigree below tracks the appearance of a recessive trait:
Match each individual on the left with the correct genotype on the right.

The pedigree below tracks the appearance of a recessive trait:
Match each individual on the left with the correct genotype on the right.