Mitosis
Meiosis I
Meiosis II
Interphase
Disorders/Syndromes
100
How many chromosomes are in human somatic cells?
46
100
How many chromosomes are in human gamete cells?
23
100
Is meiosis I or meiosis II more like mitosis?
meiosis II
100
Interphase is divided into __ phases.
3
100
Down syndrome affected cells have an extra __chromosome?
21
200
In what phase do the chromosomes line up in the middle of the cell?
Metaphase
200
Is there a metaphase in Meiosis I?
Yes
200
Does crossing over occur in Meiosis II?
No
200
In what part of interphase are organelles duplicated?
g1
200
What disorder is the only instance where a live human can have 45 chromosomes?
Turner syndrome
300
What is cytokinesis?
the division of the cytoplasm
300
What is crossing over?
When chromosomes exchange genes
300
What are the products of oogenesis?
One egg and 3 polar bodies
300
What stage of interphase do brain cells spend most of their life in?
g0
300
Patau Syndrome has an extra ___ chromosome.
13
400
The short microtubules radiate out from the centromeres in a ___ fashion in prophase.
aster
400
What is chiasmata and where does it occur?
Crossing over, the exchange of genetic information. It occurs in prophase I
400
What is a fertilized egg called?
Zygote
400
Which phase duplicates DNA?
S phase
400
Which combination of X and Y results in a normal male that is taller and less smart?
XYY
500
Draw and label anaphase.
The drawing should show spindle fibers pulling apart sister chromatids inside the nuclear membrane.
500
If an animal has 56 chromosomes, what is its haploid number?
28 chromosomes
500
How many diploid cells are the result of meiosis II?
0
500
What causes cancer in interphase?
Cells not limiting their growth and division by passing checkpoints in interphase
500
What two things cause nondisjunction?
The spindle fibers cannot find the kinetochore or they cannot pull the chromosomes apart
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