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Genetics 3
Test Description: Chapter 10 & 11 Genetics 3
Instructions: Answer all questions to get your test result.
1) Two healthy parents produce a child with a genetic disorder. What is the best explanation for this?
A
both parents carried the recessive gene
B
it was caused by the babies environment
C
there was a genetic mutation
D
crossing over occurred
2) Which genetic disorder can be identified by a karyotype?
A
Down's Syndrome
B
Hemophilia
C
Tay-Sachs Disease
D
Sickle cell anemia
3) A heterozygous Blood type A man marries a heterozygous Blood type B woman. What is the chance thier child will be type AB
A
75%
B
50%
C
0%
D
25%
4) Which are examples of sex-linked traits
A
hemophilia & red-green color blindness
B
hemophilia
C
red-green color blindness
D
sickle cell anemia
5) In a pedigree, a circle represents a
A
parent
B
male
C
female
D
child
6) In a pedigree, roman numerals represent
A
generations
B
marriages
C
years
D
siblings
7) In a predigree, a carrier is represented by a
A
non-shadded circle or square
B
half shaded circle or square
C
a triangle
D
full shaded circle or square
8) A karyotype that contains an extra chromosome enhibits what genetic disorder
A
monosomy
B
addition
C
trisomy
D
triploidy
9) A karyotype that is missing a chromosome enhibits what genetic disorder
A
trisomy
B
deletion
C
monosomy
D
triploidy
10) Meiosis results in
A
4 diploid cells
B
2 halpoid cells
C
2 diploid cell
D
4 haploid cells
*select an answer for all questions
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