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Worksheets

Heredity

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Genotype made of the same allele

a)

homozygous

b)

heterozygous

c)

dominant

d)

recessive

2.

Different forms of genes for a single trait.

a)

recessive

b)

allele

c)

genotype

d)

phenotype

3.

Gene that is always expressed

a)

homozygous

b)

recessive

c)

dominant

d)

heterozygous

4.

Gene that is expressed only in the homozygous state

a)

dominant

b)

recessive

c)

phenotype

d)

genotype

5.

 Genotype made of two different traits.

a)

heterozygous

b)

homozygous

c)

heterozygote

d)

allele

6.

Determine which is an example of dominant allele

a)

D, E, f

b)

d, E, F

c)

D, E, F

d)

d, e, f

7.

Determine which is an example of homozygous dominant.

a)

AA, KK

b)

Ll, Mm

c)

Dd, ff

d)

BB, vv

8.

Which of the following is NOT a recessive allele?

a)

M, N, o

b)

e, f, g

c)

s, t ,u

d)

a, b ,c

9.

Which on the following genotype on which dominant allele must show?

a)

AA, Dd, Rr

b)

ee, ff, gg

c)

aa,cc, tt

d)

dd, ww, qq

10.

Determine which on the following is a homozygous recessive.

a)

Aa

b)

EE

c)

ii

d)

oO

11.

Which of the following genotype in which recessive allele must show?

a)

aa,Ab, BB

b)

rr, nn, dd

c)

Ss, Ff, Qq

d)

Aa, gg, bb

12.

Examine the following Punnette Squares. Choose the correct answer.

a)
b)
c)
d)
13.

What do the letters on the outside of the Punnett Square stand for?

a)

Chromosome

b)

Phenotype

c)

Allele combination in offspring

d)

Allele in gametes

14.

What do the letters on the inside of the punnett square stand for?

a)

chromosome

b)

Allele combination in the offspring

c)

allele of the gametes

d)

phenotype

15.

This non-mendelian law states that individual who is heterozygous show intermediated phenotype.

a)

Pleiotrophy

b)

Co- dominance

c)

Incomplete dominance

d)

Polygenic Inheritance

16.

This non-mendelian law states that many gene control one phenotype.

a)

Incomplete Dominance

b)

Co-dominance

c)

Polygenic Inheritance

d)

Pleiotrophy

17.

He is known as the father of modern genetics

a)

Alfred Wegener

b)

Robert Hooke

c)

Aristotle

d)

Gregor Johann Mendel

18.

This non- mendelian law states that two different alleles are fully expressed in phenotype.

a)

Monohybrid

b)

Pleiotrophy

c)

Incomplete dominance

d)

Co-dominance

19.

What plant does Mendel used in his experiment about the discovery of heredity?

a)

squash

b)

pea plant

c)

turnip

d)

cucumber

20.

This is a diagram used to determine the possible combinations of alleles in a cross of the parent.

a)

punnett square

b)

monohybrid

c)

dihybrid

d)

law of squrae