AP Biology 2/23

If a stem cell (body cell) has 24 chromosomes, how many will it have at the end of meiosis?

• 24

• 12

• 6

• the number varies per species

Meiosis results in ______.

• 4 genetically unique haploid gametes

• 4 genetically unique diploid cells

• 2 genetically identical cells

• 4 genetically identical cells

Tags

NGSS.HS-LS3-2

The chromosomes that pair up during meiosis, are called __________ chromosomes.  

• homozygous 
• asexual
• homologous
• genes

Tags

NGSS.HS-LS3-2

What phase is  shown in the picture?

• anaphase 1
• anaphase 2
• metaphase 1
• telophase 1

Tags

NGSS.HS-LS1-4

A haploid cell has

• three sets of chromosomes

• one set of chromosomes

• two sets of chromosomes

• four sets of chromosomes

Tags

NGSS.HS-LS3-2

Human eggs and sperm are _____, and each has ____ chromosomes.

• diploid, 23
• diploid, 46
• haploid, 23
• haploid, 46

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is one of the advantages of reproducing sexually versus asexually?

• underproduction of offspring

• overproduction of offspring

• genetic variation

• artificial selection

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

What phase is represented?

• metaphase 1
• metaphase 2
• anaphase 1
• anaphase 2

Tags

NGSS.HS-LS3-2

NGSS.HS-LS1-4

Suppose that in sheep, a dominant allele (B) produce black hair and a recessive allele (b) produce white hair. If you saw a black sheep, you would be able to identify

• its phenotype for hair color

• its genotype for hair color

• the genotype of only one of its parents

• the phenotype of both of its parents

Tags

NGSS.HS-LS3-1

One of the main reasons genes assort independent of one another  is that 

• they produce unrelated traits
• they produce related traits
• they are on the same chromosome
• they are on different chromosomes.

Tags

NGSS.HS-LS3-1