DNA

Question 1

Acronym DNA

Answer 1

DNA (deoxyribonucleic acid)

Question 2

DNA key statements (4)

Answer 2

❖ carries the body’s genetic info
❖ is different for every person
❖ determines your characteristics
❖ is made up of chemical building blocks called nucleotides.

Question 3

Nucleotides how do they attach (chemical bonds)

Answer 3

The nucleotide attach to each other (A with T, and G with C) forming chemical bonds.

Question 4

What are the four bases

Answer 4

adenine (A)
guanine (G)
thymine (T)
cytosine (C)

Question 5

What are genes

Answer 5

A gene is a cell’s DNA.
Genes possess coded instructions for making everything the body needs, especially proteins.

Question 6

humans have

Answer 6

~25,000 genes.

Question 7

Chromosomes from each sex cell

Answer 7

Humans have 46. 23 from sperm cell and 23 from the egg.

Question 8

SEX CHROMOSOMES (male)

Answer 8

Sperm cells contain either an X or a Y chromosome.

Question 9

male chromosome gender

Answer 9

Boys: Receive a Y chromosome from their father and an X mother.

Question 10

Female chromosome (gender)

Answer 10

Girls: Receive an X chromosome from each of their parents.

Question 11

Mother and Father chromosomes

Answer 11

Mother always gives X thus Father determines x or y

Question 12

Nucleotide bases what they do. (base pairs)

Answer 12

there base pairs, which connect the two DNA strands.