Open Note: Sexual Reproduction/Chromosomes 3/12/20

The haploid(gamete) number of human chromosomes is

• 11

• 12

• 23

• 46

The diploid(body cell) number of human chromosomes is

• 23

• 46

• 92

How many DNA molecules make up a chromosome?

• 1
• 2
• 23
• 46

An organism's reproductive cells, or sex cells, are called _____.

• bacteria

• prokaryotes

• gametes

• pathogens

A _______ is a segment of DNA that codes for a specific protein or RNA molecule.

• gene

• gamete

• chromosome

• chromatid

Tags

NGSS.HS-LS1-1

A _________ is DNA tightly coiled around proteins.

• gene

• chromosome

• trait

• mutation

Tags

NGSS.MS-LS3-1

How many chromosomes does a human body cell have, total?

• 48

• 46

• 23

• 47

A _______ is an egg that has been fertilized by a sperm cell.

• gene

• chromosome

• zygote

• embryo

The 23rd pair of chromosomes that do determine the sex of an individual are called ___________.

• sex chromosomes

• autosomes

• homologous

• genes

The 2 female sex chromosomes are ___.

• XY

• XX