Free Printable DNA & Genetics (Middle)

Worksheets

DNA & Genetics (Middle)

Total questions: 25

Worksheet time: 13mins

Name

Class

Date

What is the basic building block of DNA or RNA?

cell

gene

amino acid

nucleotide

This person used X-rays to capture the first image of the DNA double helix.

Benjamin Franklin

Rosalind Franklin

James Watson

Francis Crick

These were the two scientists awarded the Nobel Prize for their 3D model of the DNA double helix.

Franklin & Wilkins

Watson & Crick

Darwin & Wallace

Mendel & Pea

Which of the following traits relies completely on genetics?

Height

Intelligence

Eye color

Skin color

You have 23 pairs of tightly wound DNA packages. These are your...

Bases

Strands

Proteins

Chromosomes

A trait that is NOT coded in your DNA, and is NOT passed from parent to offspring is...

Acquired

Inherited

Genetic

Defective

Height is considered to be an ____________ trait because it is coded by DNA and affected by the environment.

Acquired

Inherited

Acquired and Inherited

This word means to change or alter....

enhance

modify

eliminate

justify

This word means to remove...

enhance

modify

eliminate

justify

10.

Which nitrogenous bases pair together?

C with G
A with T

C with T
A with G

G with T
A with C

11.

Using what you know about base pairs, what is the complementary sequence for this piece of DNA:
AGCT

AGCT

TAGA

TCGA

TCCA

12.

Using what you know about base pairs, what is the complementary sequence for this piece of DNA:
AGTAACCGC

TCATTCCGC

TCATTGGCG

AGTAACCGC

TCAGGTTCG

13.

The technology of inserting genes into an organism's DNA to get desired traits is called...

Selective Breeding

Eugenics

Genetic Engineering

Genome Elimination

14.

Where is DNA kept inside a eukaryotic cell?

Nucleus

Vacuole

Chloroplast

Cytoplasm

15.

Where is DNA kept inside a bacterial cell?

Nucleus

Vacuole

Chloroplast

Cytoplasm

16.

What type of trait can be seen in many generations (grandparent, parent, child, grandchild, etc.)

Acquired

Inherited

Both

Neither

17.

A variation (different version of) of a gene is called a(n) ____________.

allele

nucleotide

trait

cell

18.

The DNA of all living things is made of the same genetic code - sequences of A, C, T, and G.

True

False

19.

It is possible that scientists may be able to prevent inherited diseases using genetic engineering.

True

False

20.

Mendel described "factors" - which we now know are sections of DNA that code for traits called _________.

genes

chromosomes

nuclei

strands

21.

What is the shape of the DNA molecule?

ring

double helix

single helix

x-shaped

22.

Which of the following genotypes is homozygous recessive?

23.

Which of the following genotypes is homozygous dominant?

24.

Which of the following genotypes is heterozygous?

25.

The allele for blue eyes (b) is recessive and the allele for brown eyes (B) is dominant. What is the genotype for someone who has blue eyes?

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DNA & Genetics (Middle)

Total questions: 25

Worksheet time: 13mins

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