The sides, or "railing", of DNA molecules are made up of:

• Sugar

• Phosphate

• Sugar and Phosphate

• Sugar and Nitrogen bases

Which nitrogenous base ALWAYS pairs with Thymine

• Adenine

• Thymine

• Guanine

• Cytosine

Which nitrogen base ALWAYS pairs with Guanine?

• Adenine

• Thymine

• Guanine

• Cytosine

How many PAIRS of chromosomes are in a human's BODY cells?

• 23

• 46

• 64

• 92

How many chromosomes are in a human BODY cell?

• 23

• 46

• 64

• 92

The passing on of traits from an organism to its offspring is known as:

• Biology

• Chemistry

• Neoteny

• Heredity

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Cancer occurs from permanent changes in the DNA known as:

• Mutations

• Karyotypes

• Genetics

• Diploids

Tags

NGSS.HS-LS3-2

Crickets have 16 chromosomes in their DIPLOID cells (2n = 16).

How many chromosomes are in their HAPLOID cells (n = ?)

• 4

• 8

• 16

• 32

How many pairs of chromosomes does this rat have?

• 18

• 19

• 36

• 38

Is this person's karyotype male or female?

• Male

• Female

Tags

NGSS.HS-LS3-1