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Punnett Square And Introduction To Genetics Practice
Test Description: Punnett Square and introduction to Genetics Practice Questions
Instructions: Answer all questions to get your test result.
1) When two alleles are the same they are
A
Crossed
B
Hybrid
C
Heterozygous
D
Homozygous
2) R is the allele for brown hair and r is the allele for blonde hair. What color hair would a person with Rr have?
A
rainbow
B
purple
C
blonde
D
brown
3) A black cow and brown bull are mated. Each is homozygous and black is dominant to brown. What is the chances that the offspring will be brown?
A
75%
B
0%
C
25%
D
50%
4) One cat is heterozygous, long hair (Rr), and it mate carries homozygous short hair (rr). What is the probability of the offspring having short hair?
A
25%
B
50%
C
100%
D
75%
5) What is the study of heredity called?
A
Environmental
B
Natural Selection
C
Evolution
D
Genetics
6) Two spotted leopards produce a litter of four cubs. Three of the cubs are spotted and one is solid black. The black coat is probably what type of trait?
A
Dominant
B
Recessive
C
Crossed
D
Environmental
7) In Geckos spots are dominate to striped. If two Gecko that are RR and rr what is the possibility of the offspring being spotted?
A
100%
B
50%
C
0%
D
25%
8) If genes for white flowers hide genes for red flowers, the “red” genes are
A
Hybrid
B
Dominant
C
Recessive
D
Incomplete
9) The physical characteristics of an organism are its
A
genotype
B
mutations
C
hybrid
D
phenotype
10) Who is called the Father of Genetics?
A
Gregor Mendel
B
Correns
C
Punnett
D
Watson and Crick
11) Green (G) is the dominant color for pods of pea plants. Yellow (g) is recessive. What is the phenotype of the following genotype: GG
A
Yellow
B
Purple
C
Green
D
Purple
12) Green (G) is the dominant color for pods of pea plants. Yellow (g) is recessive. What is the phenotype of the following genotype: Gg
A
Green
B
Purple
C
Yellow
D
Orange
13) Green (G) is the dominant color for pods of pea plants. Yellow (g) is recessive. What is the phenotype of the following genotype: gg
A
Pink
B
Yellow
C
Green
D
Blue
14) In purple people eaters, one-horn is dominant to no horns. If two heterozygous purple people eaters were crossed how many of the offspring would have horns?
A
50%
B
75%
C
100%
D
25%
15) If green leaves are dominant over yellow-striped leaves. What color leaves would you see with the genotype Rr.
A
Orange
B
Green
C
Purple
D
Yellow striped
16) If green leaves are dominant over yellow-striped leaves. What color leaves would you see with the genotype rr.
A
Green leaves
B
Purple
C
Yellow Striped
D
Orange
17) Mendel studied what type of plants
A
Peas
B
Cherries
C
Strawberries
D
Apple
18) Which one of these allele sets are homozygous?
A
Rr
B
Li
C
Qq
D
RR
19) The alleles in heterozygous are
A
one capital letter and one lower case
B
two capital letters
20) 6. An organism that has genes which are alike for a particular trait is called a
A
cross bred
B
hybrid
C
mutation
D
purebred
*select an answer for all questions
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