DNA

Question 1

What is DNA?

Answer 1

Genetic code which make up genes.

Question 2

Who discovered the double helix structure of DNA in 1953?

Answer 2

Watson and Crick with help from Frankin and Wilkins.

Question 3

What does DNA stand for?

Answer 3

Deoxyribonucleic acid

Question 4

Whose DNA is not unique?

Answer 4

Identical twins

Question 5

What is a gene?

Answer 5

A gene is a small section of DNA that gives a characteristic such as ear shape or eye colour.

Question 6

True or False: Genes are only found in humans.

Answer 6

False: Genes are found in all living organisms, including plants, animals, and bacteria.

Question 7

Fill in the blank: The basic unit of heredity is called a ______.

Answer 7

gene

Question 8

Which of the following is NOT a function of genes? A) Storing information B) Producing energy C) Coding for proteins

Answer 8

B) Producing energy

Question 9

What are alleles?

Answer 9

Alleles are pairs of genes that are inherited - one from each parent.

Question 10

True or False: Genes are only found in animals.

Answer 10

False: Genes are found in all living organisms, including plants and microorganisms.

Question 11

Fill in the blank: Genes are made up of __________.

Answer 11

DNA

Question 12

What do genes determine in an organism?

Answer 12

Genes determine traits such as eye color, hair color, and height.

Question 13

Multiple Choice: Which of the following is a function of genes? A) Storing energy B) Producing proteins C) Absorbing sunlight

Answer 13

B) Producing proteins

Question 14

What is the basic unit of heredity?

Answer 14

The basic unit of heredity is a gene.

Question 15

True or False: Each human has about 23,000 genes.

Answer 15

True

Question 16

Pairs of genes that are inherited - one from each parent are called?

Answer 16

allele

Question 17

Multiple Choice: Which part of the cell contains the genes? A) Cytoplasm B) Nucleus C) Cell membrane

Answer 17

B) Nucleus

Question 18

What are chromosomes?

Answer 18

A coiled structure of DNA found in the nucleus of cells made from many genes.

Question 19

Multiple Choice: How many chromosomes do humans have? A) 23 B) 46 C) 22

Answer 19

A) 46

Question 20

How many chromosomes do we inherit from each of our parents?

Answer 20

23

Question 21

All organisms have the same number of chromosomes. True or false?

Answer 21

False. Some have only 8, some have over 100.

Question 22

Where is DNA present?

Answer 22

In the nucleus of almost every cell in your body.

Question 23

What is fertilisation?

Answer 23

The joining of male and female gametes (sperm and ova or eggs)

Question 24

What are gametes?

Answer 24

Your sex cells (sperm and ova or eggs)

Question 25

True or false - non identical twins have the same genes or genomes?

Answer 25

False as they are made from two separate sperm, fertilising two different ova (egg cells)