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Genotypes And Phenotypes
Test Description: Genetics
Instructions: Answer all questions to get your test result.
1) What is the best description of the genotype Bb?
A
heterozygous purebred
B
heterozygous
C
homozygous recessive
D
homozygous dominant
2) What phenotype is possible for the genotype Tt if tall plants are dominant to short plants.
A
tall
B
depends how much sunlight the plant gets
C
short
D
medium
3) If purple flowers are dominant to white flowers and two white flowered plants are crossed, what percentage of their offspring will be white flowered?
A
0%
B
50%
C
100%
D
25%
4) The process in which sex cells divide is called:
A
alleles
B
mitosis
C
meiosis
D
cytokinesis
5) If brown eyes are dominant to green eyes, what genotype would represent green eyes?
A
Bg
B
gg
C
BB
D
bb
6) Straight hair is dominant to curly hair. What genotype would represent straight hair?
A
CC
B
Ss
C
Cc
D
ss
7) Which of the following is a phenoype?
A
Bb
B
BB
C
blue eyes
D
bb
8) What do we call the trait that hides or masks another trait?
A
DNA replication
B
incomplete trait
C
dominant trait
D
recessive trait
9) What percentage of the offspring will be round if the genotype is RR x rr?
A
25%
B
0%
C
50%
D
100%
10) Dimples are dominant to No Dimples. What genotype represents no dimples?
A
nn
B
DD
C
Dd
D
dd
*select an answer for all questions
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