Question

1. what is the shape of dna?

a. helix
b. square
c. circle
d. triangle

1. what carries genetic information?

a. genes
b. enzymes
c. hormones
d. vitamins

1. what results from a change in dna sequence?

a. mutation
b. photosynthesis
c. respiration
d. digestion

1. what structure holds genes?

a. protein
b. chromosome
c. lipid
d. carbohydrates

1. how many chromosomes do humans typically have?

a. 23
b. 46
c. 44
d. 22

1. which chromosome determines male gender in humans?

a. chromosome 1
b. chromosome x
c. chromosome y
d. chromosome 2

1. which process copies dna?

a. translation
b. transcription
c. replication
d. mutation

1. what is the term for a segment of dna that codes for a protein?

a. chromosome
b. gene

Explanation:

1. DNA has a double - helix structure.
2. Genes carry genetic information.
3. A change in DNA sequence is called a mutation.
4. Chromosomes hold genes.
5. Humans typically have 46 chromosomes (23 pairs).
6. The Y chromosome determines male gender in humans.
7. Replication is the process that copies DNA.
8. A segment of DNA that codes for a protein is called a gene.

Answer:

1. a. Helix
2. a. Genes
3. a. Mutation
4. b. Chromosome
5. b. 46
6. c. Chromosome Y
7. c. Replication
8. b. Gene