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Gen. Bio Genetics Test

Total questions: 33

Worksheet time: 17mins

Name
Class
Date
1.

A segment of DNA that controls a particular hereditary trait

a)

monohybrid cross

b)

gene

c)

allele

d)

heterozygote

2.

A cross involving one pair of contrasting traits.

a)

monohybrid cross

b)

gene

c)

allele

d)

heterozygote

3.

An alternative form of a gene

a)

gene

b)

allele

c)

heterozygote

d)

genotype

4.

An organism having two different alleles for a trait

a)

Gene

b)

Allele

c)

Heterozygote

d)

Genotype

5.

The genetic makeup of an organism

a)

Gene

b)

Allele

c)

Heterozygote

d)

Genotype

6.

A contrasting form of a hereditary characteristic

a)

Heredity

b)

Homozygous dominant

c)

Trait

d)

Linked Genes

7.

Having two similar, dominant alleles for a trait

a)

Heredity

b)

Homozygous dominant

c)

trait

d)

linked genes

8.

The transmission of characteristics from parents of offspring

a)

Heredity

b)

Homozygous dominant

c)

Trait

d)

Linked traits

9.

Genes found on the same chromosome

a)

Homozygous dominant

b)

Trait

c)

Linked genes

d)

Sex linked genes

10.

Presence of a gene on a sex chromosome

a)

Homozygous dominant

b)

Trait

c)

Linked genes

d)

Sex linked genes

11.

The following have several genes that act together to influence the trait; Eye color, hair and skin color, height, and weight. So what would they be?

a)

multiple alleles

b)

codominance

c)

polygenic Traits

d)

recessive traits

12.

Which law states that alleles separate during formation of gametes.

a)

Law of independent assortment

b)

Law of segregation

c)

Law of cheese

d)

Rule of Dominance

13.

Which of the following genotypes for color are NOT possible for a homozygous flower?

a)

Qq

b)

QQ

c)

qq

d)

QQRR

14.

Which genotype would a heterozygous individual have?

a)

pp

b)

mm

c)

Zz

d)

YY

15.

In a cross between a homozygous dominant parent and a homozygous recessive parent, what would the offspring be?

a)

1:1 homozygous dominant

b)

3:4 homozygous dominant

c)

1:4 homozygous recessive

d)

all heterzygous

16.

In a cross between two heterozygous parents, one would expect the offspring to be

a)

1 pp: 3 PP

b)

all Pp

c)

1 PP: 3 pp

d)

1 PP: 2 Pp: 1 pp

17.

In cats black fur is dominant. If we cross a black cat with a white cat, and the litter contains a white offspring, what would the genotype of the black cat probably be?

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous

18.

Segregation/separation of alleles occurs during

a)

pollination

b)

meiosis

c)

mitosis

d)

protein synthesis

19.

Two parents that express the dominant phenotype have an offspring expressing the recessive phenotype. What is the probable genotypes of the parents?

a)

both parents are heterozygous

b)

both parents are homozygous dominant

c)

both parents are homozygous recessive

d)

One parent is homozygous

20.

If you cross a red apple with a yellow apple and you get orange apple offspring, what is the genotype of the offspring?

a)

rr

b)

RR

c)

Rr

d)

RRRR

21.

If 2 genes are inherited together they were probably

a)

separate

b)

closely arranged

c)

far apart

22.

Genes that are inherited together tend to

a)

be found only in males

b)

be located apart from eachother

c)

belong to the same linkage group

23.

Sex-linked characteristics

a)

occur most commonly in males

b)

occur most commonly in females

c)

is always fatal

d)

don't matter

24.

Mom and dad don't have sickle cell, but one of there daughters do. Which of the following is true?

a)

Sickle cell anemia is caused by a dominant allele

b)

all three children are carriers

c)

Both parents are carry an allele for sickle cell

25.

If purple flowers in pea-plants are the dominant, what is a way you can determine the genotype of the purple pea plant?

a)

performing an experiment cross

b)

performing a test cross

c)

performing a dihybrid cross

d)

ask the person you bought it from

26.

Which of Mendel's laws is violated by linked genes?

a)

Law of Segregation

b)

Law of Dominance

c)

Law of Independent Assortment

d)

Law of heredity

27.

If you cross a homozygous dominant parent (AA) with a homozygous recessive parent (aa) what would the genotypic ratio be?

a)

100% (All same)

b)

1:1

c)

3:1

d)

1:2:1

28.

What would the phenotypic ratio be if you cross two heterozygous parents?

a)

1:1

b)

1:2:1

c)

100% (All same)

d)

3:1

29.

The fur of a rabbit can be either black (BB), grey (Bb), or white (bb). Based on the genotypes, what color were the two parent rabbits?

a)

Black x Grey

b)

Black x White

c)

Grey x Grey

d)

Grey x White

30.

Referring to the fur of rabbits, they can have black (BB), grey (Bb), or white (bb) fur. What would the phenotypes of these offspring be based on their genotypes?

a)

black and grey

b)

grey only

c)

black and white

d)

white and grey

31.

Codominance: petal color in flowers can either be red, white, or roan. What are the possible genotypes?

a)

CRCR, CRCw, and CRCW

b)

CRCW, CRCw, and CRCW

c)

CRCR, CRCw, and CWCW

32.

Codominance: petal color in flowers can either be red, white, or roan. What are the possible phenotypes?

a)

Red and white

b)

Red and roan

c)

White and roan

d)

Red, White and Roan

33.

What is true about the offspring in for parents 1 and 2 in the second generation? (Please note; individuals that are colored in have sickle cell & males are square and females are the circles)

a)

One of their sons has sickle cell anemia

b)

None of their offspring have sickle cell

c)

Their daughter has sickle cell anemia

d)

All of their children have sickle cell anemia