Free Printable AP Bio Genetics

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AP Bio Genetics

Total questions: 20

Worksheet time: 28mins

Name

Class

Date

In humans, hemophilia is an X-linked recessive trait. If a man and a woman have a son who is affected with hemophilia, which of the following is definitely true?

The mother carries an allele for hemophilia

The father carries an allele for hemophilia

The father is afflicted with hemophilia

both parents carry an allele for hemophilia

Which blood-type is co-dominant, where both alleles are expressed in the phenotype

Type A

Type B

Type AB

Type O

In guinea pigs, the alleles for black hair(B) is dominant to the allele for brown hair(b). Two black-haired guinea pigs are crossed. One of the pigs is homozygous for black hair and one is heterozygous. What percentage of their offspring are expected to have black hair?

25%

50%

75%

100%

Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?

9/16

3/16

1/16

16/16

A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:

all black

all white

all gray

speckled black and white

A child born with blood type O could have parents with all of the following blood types except...?

i^Ai^O and i^Bi^O

i^Bi^O and i^Oi^O

i^Ai^O and i^Ai^O

i^Ai^B and i^Oi^O

States that each pair of alleles segregates independently of each other pair of alleles during gamete formation.

Law of Dominance

Law of Segregation

Law of Loci

Law of Independent Assortment

Genes located near each other on the same chromosome tend to be _____________.

Inherited together.

not inherited together.

mixed together.

separated.

If the χ²_criticalvalue= 5.99 and the

χ²_calculatedvalue = 7.35, what is the conclusion

Reject null hypothesis

Accept null hypothesis

there is not enough info to decide

The conclusion can only be made if we also know the p-value

10.

What are the degrees of freedom for the following χ² test?

11.

Gene A, B, and C are on the same chromosome. Gene A separates from gene B 15% of the time and gene B separates from gene C 2% of the time. How far apart are genes A and C in gene map?

2 map units

15 map units

17 map units

30 map units

12.

Give the genotype for person II-1, for this autosomal trait.

we cannot be 100% sure of the genotype

13.

If this pedigree shows an autosomal recessive disorder, what MUST the genotype of individual II-3 be?

None of the above

14.

Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?

X^HX^h

X^hX^h

X^HX^H

X^hY

15.

Colorblindness is a sex-linked recessive disorder. If the daughter of a couple is colorblind, what are the two possible genotypes of her mother?

X^AX^A and X^AX^a

X^AX^A and X^aX^a

X^AX^a and X^aX^a

Cannot be determined

16.

The physical appearance of a trait is known as the-

genotype

phenotype

characteristics

intelligence

17.

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

18.

Skin color is polygenic where dominant gene is responsible for making dark melanin and the recessive gene is responsible for making light melanin. Which of the following skin tones would be the lightest? Check all that apply.

AABBCC

AaBbCc

AaBbcc

aaBbCc

19.

In which phase does crossing-over happen?

Prophase I

Prophase II

Metaphase I

Anaphase II

20.

What phase is this?

Anaphase II

Telophase I

Telophase II

Anaphase I

100 %

AP Bio Genetics

Total questions: 20

Worksheet time: 28mins

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