Fertilization and Differentiation

Which developmental process is represented by the diagram?

In the diagram, the process of meiosis formed

• cell 1, only

• cells 1 and 2

• cell 3, only

• cells 2 and 3

Tags

NGSS.HS-LS3-2

All cells in an embryo have the same DNA. However, the embryonic cells form organs, such as the brain and

the kidneys, which have very different structures and functions. These differences are the result of

• having two types of cells, one type from each parent

• rapid mitosis causing mutations in embryo cells

• new combinations of cells resulting from meiosis

• certain genes being expressed in some cells and not in others

Tags

NGSS.HS-LS1-4

Cells containing only half of the genetic

information of this species are found at

• A

• B

• C

• D

Tags

NGSS.HS-LS3-2

Identify the process that occurred to create the

changes seen between stages C and D

The diagram and chart below represent some of the changes a zygote undergoes during its development.

• sorting and recombination of genetic information

• mitosis and differentiation

• meiosis and gamete production

• fertilization and cycling of materials

Tags

NGSS.HS-LS1-4