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Worksheets

Heredity

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

He is the Australian who worked in his garden and governed the laws of genetic.

a)

Charles Darwin

b)

Louis Pasteur

c)

Alexander Fleming

d)

Gregor Mendel

2.

A trait that is masked by another trait.

a)

dominant

b)

allele

c)

recessive

d)

codominance

3.

When a gene is not dominant over the other and is inherited, a third kind of trait which is blended is formed.

a)

complete dominance

b)

incomplete dominance

c)

Dominance

d)

recessiveness

4.

The phenotypic ratio of dihybrid cross.

a)

4:3:3:1

b)

4:5:1:2

c)

9:3:3:1

d)

1:2:1

5.

The law that shows a pair of factors is segregated during the formation of gametes.

a)

Codominance

b)

Law of Independent Assortment

c)

Law of Segregation

d)

Principle of Dominance

6.

It is used to determined the probability for one offspring.

a)

Square knots

b)

Back Cross

c)

Punnett Square

d)

Test Cross

7.

Law that states the factors separate and distributed to gametes in a way that is completely independent on the factors traits.

a)

Law of Segregation

b)

Law of Independent Assortment

c)

Codominance

d)

Principle of Dominance

8.

This law states that one factor in a pair may mask the other, preventing the other from having an effect.

a)

Codominance

b)

Law of Segregation

c)

Principle of Dominance

d)

Law of Independent Assortment

9.

This trait is always masked by a dominant trait and can only be expressed when both are inherited.

a)

allele

b)

dominant

c)

recessive

d)

codominance

10.

It has two sets of 23 chromosomes with a total of 46 chromosomes.

a)

haploid

b)

diploid

c)

DNA

d)

genes

11.

These are found in the nucleus of the cell.

a)

DNA

b)

Chromosomes

c)

genes

d)

Chromatids

12.

These are joined by a centromere.

a)

sister chromatids

b)

genes

c)

DNA

d)

nucleus

13.

Chromosomes are located at -

a)

nucleus

b)

solenoid

c)

nucleosome

d)

histones

14.

Sister chromatids are composed of loops called -

a)

Histones

b)

genes

c)

solenoid

d)

centromere

15.

What do you call the center that attaches the p and q arms ?

a)

chromosome

b)

gene

c)

centromere

d)

DNA

16.

It is composed of proteins called Histones.

a)

nucleus

b)

nucleosome

c)

DNA

d)

chromosomes

17.

It is a set of observable characteristics of an individual.

a)

Genotype

b)

Pinoytype

c)

Phenotype

d)

Homozygous

18.

It is an organism’s set of heritable genes that can be passed down from parents to offspring.

a)

Pinoytype

b)

Genotype

c)

Phenotype

d)

chromosomes

19.

It is having two different alleles of a particular gene or genes.

a)

homozygous

b)

heterogeneous

c)

homogeneous

d)

heterozygous

20.

It is having two identical alleles of a particular gene or genes.

a)

homologous

b)

homogenous

c)

homozygous

d)

heterozygous