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Biology
Test Description: Karyotype
Instructions: Answer all questions to get your test result.
1) The normal human karyotype contains:
A
23chromosomes
B
44 chromosomes
C
none of the choices
D
46 chromosomes
2) Indicate the origin of each chromosome present in each pair.
A
Both are from the father (paternal)
B
Both are maternal origin
C
all choices are correct
D
One maternal and one paternal
3) Indicate the number of pairs of autosomal chromosomes in a normal human karyotype
A
44 chromosomes
B
23 chromosomes
C
46 chromosomes
D
22 chromosomes
4) The presence of two homologous sex chromosomes (XX) means that the individual is a
A
abnormal female
B
abnormal male
C
normal male
D
normal female
5) The presence of Y sex chromosome means that the sex of the individual is:
A
female
B
male
C
male with feminine characteristics
D
Answer 4: none of the choices
6) The number of chromosomes in the karyotypes of two normal brothers is the same, since:
A
all choices are correct
B
Both are for normal humans
C
normal humans has the same number of chromosomes
D
same species have same number of chromosomes
7) A normal man has:
A
Two Y sex chromosomes
B
Two X sex chomosomes
C
One X sex chromosome and one Y sex chromosome
D
non of the choices
8) Abnormal human karyotype may have:
A
all choices are correct
B
missing a chromosome(s)
C
extra autosomal chromosome(s)
D
extra sex chromosome(s)
9) The chromosomes are found in the:
A
cytoplasm of the cells
B
all choices are correct
C
outside the nucleus of the cells
D
nucleus of the cells
10) The chromosomes of normal human beings:
A
may have two sister chromatids
B
all choices are correct
C
carry the genetic informations
D
transfer the genetic hereditary traits to the fetus
*select an answer for all questions
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