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SCIENCE 8 - ACTIVITY

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Dominant alleles are written with:

a)

Upper case always

b)

Lower case always

2.

Recessive alleles are written with:

a)

Upper case always

b)

Lower case always

3.

Dd would look

a)

Dominant

b)

Recessive

c)

Both

d)

None

4.

dd would look

a)

Dominant

b)

Recessive

c)

Both

d)

None

5.

DD would look

a)

Dominant

b)

Recessive

c)

Both

d)

None

6.

TT and Tt are both

a)

Dominant

b)

Recessive

c)

Both

d)

None

7.

the genetic makeup or allelic set of an individual

a)

Phenotype

b)

Genotype

8.

a condition wherein the alleles for a gene are identical

a)

Homozygous

b)

Heterozygous

9.

the expressed and observable traits of organisms

a)

Phenotype

b)

Genotype

10.

a condition wherein the alleles for a gene are not identical

a)

Heterozygous

b)

Homozygous

11.

- states that the inheritance of one allele pair is independent from that of the other allele pairs. 

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

12.

- states that in a heterozygous individual, only one allele will be expressed (dominant), and the other one will be masked (recessive).

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

13.

- states that two alleles of a gene separate from each other to be contained in separate gametes. These alleles will unite randomly during fertilization.

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

14.

- involves individuals with two pairs of contrasting traits. 

a)

Monohybrid cross

b)

Dihybrid cross

15.

- involves two individuals with contrasting traits. 

a)

Monohybrid cross

b)

Dihybrid cross

16.
Which of the following is heterozygous
a)

FF

b)

tt

c)

Gg

d)

RR

17.
The different forms of a gene are called 
a)

traits

b)

chromosomes

c)

alleles

d)

peas

18.
A section on a chromosome that has genetic information for one trait is called a
a)

gene

b)

allele

c)

phenotype

d)

genotype

19.
Which of the following is homozygous recessive?
a)

rr

b)

AA

c)

TT

d)

Ff

20.
What does the prefix hetero- in heterozygous mean?
a)

same

b)

different

c)

dating

d)

human