During which stage of meiosis does crossing over usually occur?
Prophase 1
Metaphase 1
Prophase 2
Metaphase 2
11. Multiple Choice
30 seconds
1 pt
Where do different chromatids of the same homologous pair cross over?
Centromere
Chiasmata
Kinetochore
Telomere
12. Multiple Choice
30 seconds
1 pt
The members of an autosome chromosome pair, called __________, look alike and carry __________ for the same traits at the same location on each pair.
non-sister chromatids; homologues
sister chromatids; genes
genes; homologues
homologues; genes
13. Multiple Choice
30 seconds
1 pt
Synapsis plays a large role in the reduction division that is meiosis. How does this process help reduce chromosome number?
It pairs homologous chromosomes during meiosis II.
It pairs homologous chromosomes during meiosis I.
It pairs homologous chromosomes during meiosis I and II.
It permits the exchange of genetic information between sister chromatids.
14. Multiple Choice
30 seconds
1 pt
Which two processes are depicted in the figure?
mitosis and nondisjunction
synapsis and independent assortment
nondisjunction and crossing-over
synapsis and crossing-over
15. Multiple Choice
30 seconds
1 pt
What is the effect of crossing-over on the daughter chromosomes, those chromosomes that result once sister chromatids are separated by the first division of meiosis?
Crossing-over deletes some alleles and duplicates others so the daughter chromosomes contain the new mutations.
Crossing-over does not have any detectable effect on the daughter chromosomes.