Chromosomes and Inheritance

What is a gene?

• segments of code that appear on chromosomes

• segments of code that appear on pistils

• segments of code that are found in the brain

• segments of code that are found in the heart

Tags

NGSS.HS-LS3-1

NGSS.HS-LS1-1

How many chromosomes does every cell in the body have? (except for sex cells)

• 23

• 46

• 48

• 50

Fill in the blank.

All sexually-reproducing organisms form sex cells, which have ______the number of chromosomes that body cells have. 

• the same

• half

• less

• more

When are chromosomes made?

• at the end of the cell cycle

• in the middle of the cell cycle

• at the beginning of the cell cycle

• throughout the cell cycle

When does a chromosome get its X shape?

• during the cell cycle

• Never, it is Y shaped

• during photosynthesis

• during cellular respiration

Tags

NGSS.HS-LS1-4

Approximately how many genes are found on 46 chromosomes?

• between 9-29

• between 1 miliion - 2 milliom

• between 20,000 - 25,000

• between 50 - 100

During fertilization, how many chromosomes do you get from your father?

• 20

• 23

• 46

• 100

Tags

NGSS.HS-LS3-1

True or False.

Mitosis forms new body cells.

• True

• False

Tags

NGSS.HS-LS1-4

True or False.

Meiosis forms sex cells.

• False

• True

Tags

NGSS.HS-LS3-2

Which process results in the formation of four daughter cells?

• Meiosis

• Mitosis