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Genetics

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

An allele is:

a)

a heterozygous genotype

b)

another word for a gene

c)

one of several possible forms of a gene

d)

a homozygous genotype

2.

What plant did Mendel use to study the hereditary trait

a)

eggplant

b)

tomato

c)

pea

d)

tea

3.

what can be used to predict the outcome of genetic crosses

a)

Dihybrid cross

b)

Punnett Square

c)

periodic table

4.

Organisims that have 2 identical alleles for a particular traits are

a)

dominant

b)

heterozygous

c)

homozygous

d)

hybrid

5.

____________ is the appearance of an organism, or how it looks

a)

ratio

b)

recessive trait

c)

heredity

d)

phentotype

6.

True or False: offspring receives two sets of genes (one from each parent)

a)

true

b)

false

7.

If a child has blonde hair, they inherited a certain ______ from their parents

a)

ratio

b)

sex chromosome

c)

probability

d)

trait

8.

______________is the mathmatical chance that something will happen

a)

divison

b)

ratio

c)

probability

9.

True or false: sex cells are cells that join together to make off spring

a)

False

b)

True

10.

True or false: Heterozygous is when you have two different alleles

a)

True

b)

False

11.

DD is an example of

a)

recessive

b)

dominant

c)

homozygous dominant

d)

homozygous recessive

12.

True or false: phenotype is the physical look of a trait

a)

true

b)

false

13.

dd is an example of

a)

recessive

b)

homozygous recissive

c)

dominant

d)

homozygous dominant

14.

Codominance is the phenotype that shows both traits

a)

true

b)

false

15.

Ff is an example of

a)

dominant genes

b)

homozygous genes

c)

recessive genes

d)

heterozygous genes

16.

The science of heredity

a)

chemistry

b)

physics

c)

genetics

d)

ecology

17.

Why did Gregor Mendel chose to study pea plants in order to learn how traits are passed from parent to offspring

a)

Pea plants are expensve

b)

pea plants grow quickly

c)

pea plants take years to grow

18.

which shows a recessive homologous trait

a)

FF

b)

Ff

c)

ff

19.

Gregor Mendel studied pea plants and their traits

a)

True

b)

False

20.

What percentage of the offspring will have recessive homozygous genotypes

a)

0%

b)

100%

c)

25%

d)

50%