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Genetics Worksheet Quiz

Total questions: 40

Worksheet time: 36mins

Name
Class
Date
1.

Genetics is the study of

a)

Bacteria

b)

Evolution

c)

Heredity

d)

Reproduction

2.

Brown eyes in humans is a dominant trait. We inherit dominant traits from our parents, some from our mother and some from our father, in the form of ______________.

a)

RNA

b)

Gametes

c)

Dollars

d)

Alleles

3.

According to Mendel's ______________, one copy of a gene is passed randomly from each parent to their offspring. Therefore, gametes have half the usual number of chromosomes. The ______________ states that different genes are not connected. In other words, the gene for eye color is not influenced by, nor does it influence, the gene for hair color. This allows gametes to form with a random mixture of traits. The cell division that creates gametes according to these principles is known as ______________.

a)

Law of Segregation; Law of Dominance; mitosis

b)

Law of Independent Assortment; Law of Segregation; mitosis

c)

Law of Independent Assortment; Law of Segregation; meiosis

d)

Law of Segregation; Law of Independent Assortment; mitosis

e)

Law of segregation; Law of Independent Assortment; meiosis

4.

Using the Punnett square to right, what is the probability of a dominant trait?

a)

0%

b)

25%

c)

75%

d)

100%

5.

Tongue rolling is dominant to the inability to roll one’s tongue. Suppose that Jack, whose genotype is Rr, marries Jill, whose genotype is rr. According to the Punnett square, what fraction of their kids will be unable to roll their tongue?

a)

0/4

b)

¾

c)

1/2

6.

Use the information in the Punnett square to the right to answer the following question. Consider the possible genotypes of the offspring of two heterozygous brown goats. The ratio of brown to white offspring in this case would be?

a)

1:3

b)

2:2

c)

3:1

d)

3:4

7.

Black and white coloration in cows is dominant to brown and white. Black and white cows were crossed over several years and the following offspring were produced: 9 black and white and 3 brown and white. What are the genotypes of the parents?

a)

BB x BB

b)

BB x bb

c)

Bb x bb

d)

Bb x Bb

8.

The gene for red/green colorblindness in humans is sex-linked recessive and primarily affects males. It must be located on

a)

The X chromosome

b)

The Y chromosome

c)

Both the X and Y chromosome

d)

Either the X or Y chromosome

9.

In a cross of two flowers, red, R, is dominant and white, r, is recessive. In a cross between two white-flowered plants, what statement would BEST describe the offspring?

a)

75% of the flowers would be white and the remaining 25% would be red

b)

There would be some variation; most flowers would be white, and a few would be red

c)

There would be no variation in color. All flowers will be white unless a mutation occurred.

d)

Flower color variation would be equally divided given the homozygous parents, half red and half white.

10.

Red flowers (dominant) crossed with white flowers (recessive) can yield pink flowers. Pink is the heterozygous condition in a trait that shows incomplete dominance. If pink flowers are crossed with white flowers, what percentage is expected to be red flowers?

a)

0%

b)

25%

c)

50%

d)

100%

11.

Ms. Smith has a baby named Tyra. She believes one of two men can be the father of her child. A paternity test is done, and the results are shown here. What is the best possible answer?

a)

Male 1

b)

Male 2

c)

Both Male 1 and Male 2

d)

Neither Male 1 nor Male 2

12.

Scientists use artificial pollination to develop new kinds of flowers, fruits, and vegetables. This type of selective breeding produces new varieties called

a)

dicots

b)

hybrids

c)

predators

d)

Monocots

13.

Recombinant DNA technology is used to produce all the following EXCEPT

a)

Human insulin

b)

Cancer fighting drugs

c)

New genetic varieties of plants

d)

Preferred genotypes for human offspring

14.

For over a decade, farmers in the U.S. have been planting genetically modified crops. An example of one of these crops is corn that is resistant to weed killer. This makes it so that no corn is lost due to contact with herbicide meant to kill weeds. While this is seen by many as a positive development, others see it as a cause for concern. What is one possible negative side effect of planting corn that is resistant to weed killer?

a)

Genetically modified corn, as well as other plants, is unnatural

b)

Corn will replace wheat and other crops as our main source of carbohydrates

c)

Plants with modified genomes may have an unforeseen impact on the environment

d)

The resistance gene could transfer to actual weeds, making farming more difficult

15.

Scientists are using DNA fingerprinting to help identify the bodies of those killed in the 9/11 tragedy. Most on-site evidence is in the form of bones or teeth. Yet the evidence supplied by the victims' families may include hair or toothbrushes. How are scientists able to compare DNA from bones or teeth to that found in hairs on a hairbrush?

a)

They cannot and this is making body identification difficult

b)

Each sample provides an exact karyotype for genetic identification

c)

DNA is the same in every cell of the body and does not change over time

d)

The DNA must all come from the hair to be accurate

16.

_____ are different forms of the same gene that are found on the same position of two homologous chromosomes.

a)

Alleles

b)

Chromatids

c)

Loci

d)

Nucleotides

17.

What is the genotype of individual II-3?

a)

AA

b)

Aa

c)

aa

18.

What is the genotype of individual III-4?

a)

AA

b)

Aa

c)

aa

19.

Is the trait illustrated in the pedigree dominant or recessive?

a)

Dominant

b)

Recessive

20.

What is the relationship between individuals I-3 and III-5?

a)

Parent to child

b)

Grandparent to child

c)

Aunt/uncle to niece/nephew

21.

Mr. Megabucks had a theft at his mansion. The investigators have asked you to help in determining which of the 3 suspects completed the crime. Use the DNA Fingerprint to the right to choose the suspect that committed the crime.

a)

Suspect 1

b)

Suspect 2

c)

Suspect 3

22.

In the chart to the right, what is the genotype of III-1?

a)

AA

b)

Aa

c)

aa

23.

Is the trait in the pedigree dominant or recessive?

a)

Dominant

b)

Recessive

24.

Using the punnett square to the right, which is the correct genotype of the parents?

a)

AaBb x AaBB

b)

Aabb x aabb

c)

AaBb x AaBb

d)

aabb x aabb

25.

Which of the following is the function of a lipid?

a)

Immediate energy

b)

Building tissues

c)

Enzymes

d)

Stored energy

26.

During cellular respiration, what are the substances that are taken into the reaction?

a)

Glucose and carbon dioxide

b)

Glucose and oxygen

c)

Water and carbon dioxide

d)

Water and oxygen

27.

Which organelle do prokaryotes and eukaryotes NOT have in common?

a)

Cytoplasm

b)

Cell membrane

c)

Nucleus

d)

Ribosomes

28.

What is one example of a DISADVANTAGE to sexual reproduction?

a)

Genetic variation

b)

Only one parent

c)

Two parents needed

d)

All offspring are identical

29.

What is the function of an enzyme?

a)

Lowers activation energy to speed up chemical reactions

b)

Raises activation energy to speed up reactions

c)

Lowers activation energy to slow down chemical reactions

d)

Raises activation energy to slow down chemical reactions

30.

The result of mitosis is

a)

Two different daughter cells

b)

Four different daughter cells

c)

Two identical daughter cells

d)

Four identical daughter cells

31.

What is the monomer of a protein?

a)

Fatty acid

b)

Amino acid

c)

Monosaccharide

d)

Nucleotide

32.

What type of transport uses proteins to help move molecules across a semipermeable membrane?

a)

Diffusion

b)

Facilitated diffusion

c)

Osmosis

d)

Active transport

33.

During the process of protein synthesis, DNA is converted into RNA during which step?

a)

Transcription

b)

Replication

c)

Translation

34.

Which of the following is an example of a primary consumer?

a)

Tulip

b)

Snake

c)

Hawk

d)

Cow

35.

What would be the complimentary RNA strand to the following DNA strand: AGCTGCATA

a)

CGTCAGTGA

b)

CGTGCCTCAG

c)

UCGACGUAU

d)

UGCUACGAU

36.

Which is the result of meiosis?

a)

Two different daughter cells

b)

Four different daughter cells

c)

Two identical daughter cells

d)

Four identical daughter cells

37.

Which biogeochemical cycle do humans have the largest impact?

a)

Carbon

b)

Water

c)

Nitrogen

d)

Phosphorus

38.

In DNA, Adenine pairs with ________, while in RNA Adenine pairs with ________.

a)

G; C

b)

U; A

c)

T; U

d)

C; U

39.

Which organelles do animals have that plants do not?

a)

Chloroplasts and cell wall

b)

Lysosomes and centrioles

c)

Mitochondria and nuclei

d)

Cytoplasm and vacuoles

40.

How many points is a completed study guide going to give you on the test?

a)

10

b)

6-7

c)

-4

d)

The Treaty of Versailles