DNA + GENETICS

Question 1

What does DNA look like

Answer 1

Made up of two strands
The strands are joined together by four different chemicals
The strands are twisted together to form a double helix shape

Question 2

Put these in order starting with smallest
Cell, chromosome, gene, DNA, nucleus

Answer 2

gene, chromosome, DNA, nucleus, cell

Question 3

dominant alleles def

Answer 3

will always be expressed if present

Question 4

recessive alleles def

Answer 4

Expressed if two copies are present

Question 5

Punnett square def

Answer 5

a diagram to show the possible combinations of alleles inherited from parents

Question 6

Alleles def

Answer 6

different forms of the same gene

Question 7

Explain why offspring aren’t identical to their parents

Answer 7

They both inherit genetic information from both parents but during feralization genetic material from parents are mixed each inherit a different combination of genes