Biology, Tuesday Bell Ringer, 1.23.18

Which of the following statements about homologous chromosomes is correct?

• Each gene is at the same locus on both chromosomes.
• They are two identical copies of a parent chromosome which are attached to one another at the centromere.
• They come from the same parent.
• They are chromosomes that have identical genes and alleles.

Tags

NGSS.HS-LS3-2

The structure labeled A is a(n)

• chromatid
• centriole
• centromere
• chromophere

Tags

NGSS.HS-LS1-4

The structures labeled B are

• centrioles
• chromatids
• centromeres
• chromopheres

Tags

NGSS.HS-LS1-4

The haploid number of human chromosomes is

• 11
• 12
• 23
• 46

Tags

NGSS.HS-LS3-2

The diploid number of human chromosomes is

• 23
• 46
• 92

Tags

NGSS.HS-LS3-2

Histones are 

• proteins wound up in DNA
• critical to maintaining the shape of chromosomes
• aid in the tight packing of DNA
• all of these 

Tags

NGSS.HS-LS1-1

Autosomes are

• chromosomes found in autotrophs, only
• chromosomes that automatically correct all errors in the DNA
• chromosomes that determine traits other than sex
• chromosomes that determine the sex of the individual

Tags

NGSS.HS-LS3-1

Autosomes can be defined as:

• chromosomes that help express physical traits
• chromosomes that express gender
• cells that express traits
• cells that express gender

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

The life cycle of a cell is called

• mitosis
• meiosis
• the cell cycle
• the cell life span

Tags

NGSS.HS-LS1-4

Which of the following is NOT a somatic cell?

• sperm
• skin cell
• blood cell
• bone cell