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Life Science Review 5.2
Test Description: Traits and Inheritance
Instructions: Answer all questions to get your test result.
1) A gene is
A
a set of instructions for a characteristic
B
one form of a characteristic
C
one form of a trait
D
2 of the choices
2) Alleles are
A
a form of a gene
B
represented as letters
C
all of the choices
D
dominant or recessive
3) What are the results of a cross between parents with genotypes CC and Cc if C means you have a cleft chin and c means you don't.
A
all of the choices
B
All offspring have cleft chins
C
The ratio of genotypes is 1:1
D
There are offspring with the genotype CC and with the genotype Cc
4) A curly eared cat mated with a normal eared cat. All of the kittens had curly ears. What is the genotype of the kittens if the allele for curly ears is C.
A
CC
B
cc
C
Cn
D
Cc
5) The phenotype for flowers with the genotype Pp is
A
a combination of purple and white
B
white
C
none of the choices
D
purple
6) Incomplete dominant traits result in offspring with
A
the recessive trait
B
the dominant trait
C
a blend of the parents traits
D
2 of the choices
7) Which of the following is incorrect?
A
none of the choices
B
one gene can influence more than one trait
C
many genes can influence one trait
D
one gene can influence one trait
8) What are the chances that a man with the genotype Bb and a women with the genotype bb can have kids with blue eyes? (B is brown, b is blue)
A
25%
B
50%
C
100%
D
75%
9) What is the probable ratio of brown to blue eyed offspring if a man with the genotype Bb has kids with a women with the genotype Bb
A
3:1
B
1:1
C
4:1
D
2:1
10) Which possible genotypes will produce offspring with only the genotypes Bb
A
BB x bb
B
Bb x bb
C
BB x Bb
D
BB x BB
*select an answer for all questions
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