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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
Fusion of the two products
B
There is no DNA sythesis between the divisions
C
The result is four cells with haploid number of chromosomes
D
There are two consecutive divisions
2) If 2n=8, for a particular cell, then the chromosome number in egg cell after meiosis would be
A
8
B
12
C
6
D
4
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
lungs
B
Stomach
C
Skin
D
Testes
5) Asexual and sexual reproduction differ in the way that sexual reproduction...
A
is the only way multicellularcan reproduce
B
can produce grat variation among offspring
C
will produce offspring identical to the parents
D
is the only way single-celled organisms can reproduce
6) Which of the following shows mitosis in the correct chronological order?
A
Prophase metaphase anaphase telophase
B
anaphase metaphase telophase prophase
C
prophase anaphase metaphase 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
44
B
23
C
184
D
46
8) A malignant tumor is a condition in which cells
A
have an unusual number of chromosome
B
migrate from the initial site and cause cancer
C
do not usually cause death
D
remain confined to original site and do not 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
black, white and and black and white
B
only 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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