c16 meiosis sb

Question 1

in humans, the cells that contain only 23 chromosomes are called

Answer 1

gametes

Question 2

which two key events occur at the beginning of meiosis but not mitosis?

Answer 2

• formation of bivalents
• crossing over

Question 3

homologous chromosomes are separated from each other during _____

Answer 3

meiosis 1 only

Question 4

in what phase of meiosis are sister chromatids separated?

Answer 4

anaphase 2

Question 5

which of the following statements correctly compare mitosis and meiosis?

Answer 5

• sister chromatids are separated during both mitosis and meiosis
• crossing over occurs in meiosis but not normally in mitosis

Question 6

when two haploid gametes unite, they create a diploid cell called a(n)

Answer 6

zygote

Question 7

while ____ reproduction is less costly, _____ reproduction is commonly utilized because it generates genetic diversity

Answer 7

• asexual
• sexual

Question 8

a life cycle is best described as the process that ____.

Answer 8

produces another generation of organisms

Question 9

how many chromosomes does a human gamete possess?

Answer 9

23

Question 10

bivalent formation and crossing over are two key events that typically occur at the beginning of which of these?

Answer 10

meiosis only

Question 11

meiosis 1 sorting separates which of these

Answer 11

homologous chromosomes

Question 12

the sister chromatids are separated during ____ 2 of meiosis

Answer 12

anaphase

Question 13

what statement about mitosis and meiosis is correct?

Answer 13

sister chromatids are separated both during mitosis and meiosis

Question 14

a zygote is created when two haploid cells, called _____ fuse

Answer 14

gametes

Question 15

which of the following are main disadvantages of sexual reproduction?

Answer 15

• it involves lots of time and energy
• it requires specialized body parts

Question 16

the sequence of events that produces another generation of organisms is known as a(n) ____ cycle

Answer 16

life