Chapter 6 Quizes

Question 0

The DNA in linear eukaryotic chromosomes is wrapped around proteins called —- which keep the DNA from getting tangled and enable an orderly, tight, and efficient packing of the DNA inside the cell

Answer 0

Histones

Question 1

Trisomy 21 is a consequence of —- the unequal distribution of chromosomes during meiosis

Answer 1

Non disjunction

Question 2

During metaphase 2 in meiosis a cell contains —- of the DNA it did during prophase 1

Answer 2

1/2

Question 3

In multicellular organisms the cells that undergo mitotic cellular division but not meiosis cell division are called

Answer 3

Somatic cells

Question 4

Crossing over means the same as

Answer 4

The process by which pieces of homologous chromosomes are exchanged

Question 5

In multicellular organisms cells that undergo mitotic division but not meiotic division are called

Answer 5

Somatic cells

Question 6

Spindle fibers are present in all the phases of mitosis except

Answer 6

Telophase

Question 7

The unequal division of the genetic material during cell division

Answer 7

Nondisjunction

Question 8

Animal cells have “counters” that keep track of how many times a cell divided. These counters are called

Answer 8

Telomeres

Question 9

What is non- disjunction

Answer 9

Extra or missing copies of a chromosome

Question 10

Which of the following statements about the cell cycle is not true

Answer 10

The gap 2 phase immediately follows the gap 1 phase

Question 11

Within interphase which of the stages is defined by the active replication of the cells genetic material

Answer 11

The DNA synthesis phase

Question 12

Which of the following types of mutations occurs when one or two nucleotides are either inserted or deleted from a DNA sequence

Answer 12

Frame shift mutations