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Q 1/35
Score 0
Chromosomes are duplicated during what stage of the cell cycle?
30
Prometaphase
S phase
G1 phase
prophase
Q 2/35
Score 0
Which stage of mitosis is characterized by the separation of sister chromatids?
30
Metaphase
Anaphase
Telophase
Prometaphase
35 questions
Q.
Chromosomes are duplicated during what stage of the cell cycle?
1
30 sec
Q.
Which stage of mitosis is characterized by the separation of sister chromatids?
2
30 sec
Q.
During which stage of mitosis do unpacking of chromosomes and the formation of a new nuclear envelope happen?
3
30 sec
Q.
Which stage of mitosis is characterized by the attachment of mitotic spindle fibers to kinetochores?
4
30 sec
Q.
During which stage of mitosis do the chromosomes become visible under a light microscope?
5
30 sec
Q.
Which of the following events DOES NOT occur during some stages of interphase?
6
30 sec
Q.
In which cell structure do mitotic spindles arise from?
7
30 sec
Q.
What structure forms by the fusing of Golgi vesicles at the metaphase plate of dividing plant cells?
8
30 sec
Q.
What is the main prerequisite for clearance at the G2 checkpoint?
9
30 sec
Q.
Which of the following phases of mitosis is essentially the opposite of prophase in terms of nuclear changes?
10
30 sec
Q.
if a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called _______________.
11
30 sec
Q.
The sex chromosomes of normal females are:
12
30 sec
Q.
The genes on the sex chromosomes of females are ______________ and those of males are mostly___________.
13
30 sec
Q.
AUTOSOMES:
14
30 sec
Q.
Normal humans have __________ pairs of autosomes and __________ pair(s) of sex chromosomes
15
30 sec
Q.
______________ only occur(s) in the gonads to produce gametes
16
30 sec
Q.
During which stage of mitosis do the centromeres split?
17
30 sec
Q.
What is the correct order of the stages of mitosis? 1- Metaphase 2- Telophase 3- Anaphase 4- Prophase
18
30 sec
Q.
During which stage of mitosis does cytokinesis usually occur in animals?
19
30 sec
Q.
In both mitosis and meiosis, sister chromatids separate during anaphase, but there are _____ haploid daughter nuclei produced by meiosis compared to ______ diploid nuclei by mitosis.
20
30 sec
Q.
When ____________ occurs between non sister chromatid genetic exchange between chromosomes provides new combination of genes that are different from either parent.
21
30 sec
Q.
Which of the following statements is true about meiosis in humans?
22
45 sec
Q.
Human gametes normally have ______________ chromosomes.
23
45 sec
Q.
Somatic cells reproduce by ______________ , while sex cells reproduce by __________ .
24
45 sec
Q.
Which of the following statements is true of sex chromosome abnormalities in humans?
25
45 sec
Q.
Male sex chromosome abnormalities can be due to abnormal numbers of ______________ chromosome.
26
30 sec
Q.
If someone only has one X chromosome and no Y chromosomes in their somatic cell, they:
27
30 sec
Q.
A chromosomal abnormality that causes a woman to be unusually short in stature( average 4'7"), to have a webbed neck, and to generally lack feminine secondary sexual characteristics is:
28
30 sec
Q.
A chromosomal abnormality that causes a man to have asexual to feminine body contours with large breast; small penis, testes, and prostate gland; relatively little body hair; and sterility is:
29
30 sec
Q.
Normal number of chromosomes:
30
30 sec
Q.
A change in a gene is called
31
30 sec
Q.
The fusion of a gamete with an extra chromosome (n+1) with a normal gamete resulting in a 2n+1 condition. change in chromosome number
32
30 sec
Q.
The fusion of a gamete with a missing chromosome (n-1) with a normal gamete resulting in a 2n-1 condition. changes in chromosome number.
