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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
crossing over occurred
B
there was a genetic mutation
C
both parents carried the recessive gene
D
it was caused by the babies environment
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
50%
B
75%
C
0%
D
25%
4) Which are examples of sex-linked traits
A
sickle cell anemia
B
hemophilia
C
red-green color blindness
D
hemophilia & red-green color blindness
5) In a pedigree, a circle represents a
A
child
B
parent
C
female
D
male
6) In a pedigree, roman numerals represent
A
generations
B
siblings
C
marriages
D
years
7) In a predigree, a carrier is represented by a
A
full shaded circle or square
B
non-shadded circle or square
C
half shaded circle or square
D
a triangle
8) A karyotype that contains an extra chromosome enhibits what genetic disorder
A
triploidy
B
trisomy
C
addition
D
monosomy
9) A karyotype that is missing a chromosome enhibits what genetic disorder
A
trisomy
B
monosomy
C
deletion
D
triploidy
10) Meiosis results in
A
2 halpoid cells
B
2 diploid cell
C
4 diploid cells
D
4 haploid cells
*select an answer for all questions
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