Final #2

Question 1

In which phase of interphase is DNA duplicated?

Answer 1

S phase

Question 2

By the end of prophase in mitosis, each of the following has occurred except

Answer 2

lining up of chromosomes in the middle of the cell

Question 3

Unlike plant cells, animal cells contain

Answer 3

Centrioles

Question 4

The longest phase of the cell cycle is

Answer 4

Interphase

Question 5

A chromatid is attached to the spindle fiber by the

Answer 5

Centromere

Question 6

Long, unorganized strands of DNA found in the nucleus during interphase are called

Answer 6

Chromatin

Question 7

The process by which the cytoplasm divides separating the one cell into twos called

Answer 7

Cytokinesis

Question 8

Crossing over occurs at which stage of meiosis?

Answer 8

Prophase I

Question 9

An event that DOES NOT contribute to genetic variation

Answer 9

Mitosis

Question 10

Events that DO contribute to genetic variation

Answer 10

Independent assortment
Crossing over
Random fertilization

Question 11

Duing which phase of meiosis homologous pairs of chromosomes line up next to one another along
the equator?

Answer 11

Metaphase 1

Question 12

Which of these amns desertbes two similar chromosomes that are inherited from each parent?

Answer 12

Homologous chromosomes

Question 13

What occurs during the process of nondisjunction through meiosis in humans that can lead to a child with the condition of Down Syndrome?

Answer 13

Production of gametes with 1 duplicate chromosome

Question 14

A phrase best describes the process of meiosis

Answer 14

Produces haploid gametes for genetic variation

Question 15

Proteins are produced based on instructions from your_____which come from your____

Answer 15

Genes, DNA

Question 16

A scientist is using a karyotype to investigate an organism. What would not be able to be identified from this karyotype?

Answer 16

Height

Question 17

Diploid cells would have____of each chromosome, while a haploid cell would have_______of each chromosome.

Answer 17

Two, one

Question 18

Organisms end up with so many different possible combinations of genes through genetic recombination. Genetic recombination happens during_____when parts of the homologous chromosomes are exchanged.

Answer 18

Crossing over

Question 19

In which phase of meiosis, do cells become haploid?

Answer 19

Telophase I

Question 20

During anaphase I, and anaphase II, similar events are happening. The main distinction in anaphase is that are pulling apart. If you were to summarize anaphase, what would you say?

Answer 20

Sister chromatids

Question 21

Independent assortment can best described as a process that

Answer 21

Randomly lines up with chromosomes in metaphase

Question 22

Independent assortment can best described as a process that

Answer 22

Randomly lines up chromosomes in Metaphase

Question 23

Random fertilization allows for genetic variation because

Answer 23

There are so many combinations from eggs and sperm cells in the formation of a zygote

Question 24

What is one of the main differences between meiosis and mitosis?

Answer 24

Mitosis produces somatic cells while meiosis produces gametes

Question 25

__________ does not occur in mitosis

Answer 25

Sexual reproduction

Question 26

If cyclin is present and there is a mutation in the DNA replication during S phase, what will happen to the cell?

Answer 26

The cell will performs Apoptosis

Question 27

The main difference between cytokinesis n plant and animal cells

Answer 27

Animal cells form a cleavage furrow and separate completely, plant cells form a cell plate

Question 28

An error in telophase I can result in?

Answer 28

Sister chromatids never reaching the poles