DNA, Chromosomes and Genes

Which of the following statements about chromosomes is correct?

• Chromosomes are long, thread-like structures

• Chromosomes are found in the nucleus of all cells in the human body

• Chromosomes contain DNA

• All of the above

What are homologous chromosomes?

• Two chromosomes that are the same length

• Two chromosomes that have the centromere in the same position

• Two chromosomes that have genes for particular characteristics at the same location along their length

• All of the above

How many chromosomes are found in each cell of your body (excluding gametes)?

• 46

• 23

• 40

• 45

The gametes only contain half as many chromosomes as your body cells.

• True

• False

Of the chromosomes in your cells, how many are sex chromosomes?

• 1

• 2

• 3

• 4

What are genes?

• Pants

• Specific traits

• Sections of DNA arranged along the chromosomes

• Chromosomes

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Of the following statements, which are true?

• Proteins may be structural

• Proteins may be enzymes

• Proteins may be regulatory

• All of the above

Tags

NGSS.HS-LS1-1

How many copies of each gene do you have?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-2

What does DNA stand for?

• Deoxyribosenucleic acid

• Deribosenucleic acid

• Deoxyribose

• Nucleic acid

Which of the following base pairings is correct?

• T-T, C-A

• A-T, C-C

• A-T, C-G

• C-G, C-C