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Mendelian genetics

Total questions: 13

Worksheet time: 7mins

Name
Class
Date
1.

Genes are found on

a)

chromosomes

b)

proteins

c)

alleles

d)

gametes

2.

Gregor Mendel discovered that recessive traits

a)

will be hidden by dominant traits

b)

will be mixed with dominant traits

c)

will cover up and hide dominant traits

3.

When discovering dominant traits of a plant, like purple flowers, you are describing its

a)

genotype

b)

phenotype

4.

The genotype symbol (Aa) stands for

a)

homozygous dominant

b)

heterozygous dominant

c)

heterozygous recessive

d)

homozygous recessive

5.

If you cross a white (recessive) flower with genotype (aa) with a purple (dominant) flower with genotype (AA) the possible phenotypes in the offspring will be

a)

100% white

b)

75% purple, 25% white

c)

100% purple

d)

50% purple, 50% white

6.

For the Punnett square shown, the missing genotype symbol of the missing parent is

a)

AA

b)

Aa

c)

aa

7.

In pea plants, yellow peas are dominant over green peas. The correct phenotype order for genotypes AA, Aa, and aa would be

a)

yellow, yellow, yellow

b)

yellow, yellow, green

c)

yellow, green, green

d)

green, green, green

8.

An organism that has inherited two of the same alleles, like aa, would be described as

a)

homogenous

b)

homozygous

c)

heterogenous

d)

heterozygous

9.

An organism that has 12 chromosomes in each body cell would have how many chromosomes in each of its sex cells (gametes)?

a)

3

b)

6

c)

12

d)

24

10.

Using the Punnett square shown, the genotype of the space represented by "2" is

a)

RRYY

b)

RRYy

c)

RrYY

d)

RrYy

11.

Using the Punnett square shown, a heterozygous round seeded homozygous green seeded plant would be found in square

a)

1

b)

2

c)

3

d)

6

12.

A flower that pollinates itself is an example of

a)

asexual reproduction

b)

sexual reproduction

13.

When an organism goes through asexual reproduction, like a bacterium that divides into two, the resulting organisms are

a)

genetically different to one another

b)

genetically identical to one another