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Genetics
Test Description: 11-20
Instructions: Answer all questions to get your test result.
1) All of the following are true of meiosis EXCEPT...
A
There are two consecutive divisions
B
Fusion of the two products
C
There is no DNA sythesis between the divisions
D
The result is four cells with haploid number of chromosomes
2) If 2n=8, for a particular cell, then the chromosome number in egg cell after meiosis would be
A
12
B
4
C
6
D
8
3) Crossing over occurs during which phase of meiosis
A
Anaphase I
B
Prophase I
C
Metaphase I
D
Meaphase II
4) Meiosis takes place in which of the following organs?
A
Stomach
B
lungs
C
Testes
D
Skin
5) Asexual and sexual reproduction differ in the way that sexual reproduction...
A
is the only way multicellularcan reproduce
B
is the only way single-celled organisms can reproduce
C
will produce offspring identical to the parents
D
can produce grat variation among offspring
6) Which of the following shows mitosis in the correct chronological order?
A
anaphase metaphase telophase prophase
B
prophase anaphase metaphase telophase
C
Prophase metaphase anaphase telophase
D
Telophase anaphase metaphase prophase
7) Imagine a human skin cell is in G1. If a karyotype were prepared how many chromosomes would be observed in the cell?
A
23
B
184
C
46
D
44
8) A malignant tumor is a condition in which cells
A
remain confined to original site and do not cause cancer
B
do not usually cause death
C
have an unusual number of chromosome
D
migrate from the initial site and cause cancer
9) In pea plants, inflated pods (R) are dominant to constricted pods (r). Which is a cross between inflated and constricted pods?
A
RR X Rr
B
Rr X Rr
C
RR X rr
D
RR X RR
10) In a codominant cross, a black chicken is crossed with a black and white chicken. What are the possible genotypes that can be produced?
A
only black and white
B
black, white and and black and white
C
black and black and white
D
white and black and white
*select an answer for all questions
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