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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
Homozygous
C
Heterozygous
D
Hybrid
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
blonde
B
brown
C
purple
D
rainbow
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
50%
B
75%
C
25%
D
0%
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
50%
B
100%
C
25%
D
75%
5) What is the study of heredity called?
A
Genetics
B
Evolution
C
Environmental
D
Natural Selection
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
Recessive
B
Environmental
C
Crossed
D
Dominant
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
25%
B
50%
C
0%
D
100%
8) If genes for white flowers hide genes for red flowers, the “red” genes are
A
Dominant
B
Hybrid
C
Incomplete
D
Recessive
9) The physical characteristics of an organism are its
A
mutations
B
hybrid
C
genotype
D
phenotype
10) Who is called the Father of Genetics?
A
Correns
B
Watson and Crick
C
Gregor Mendel
D
Punnett
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
Purple
B
Green
C
Purple
D
Yellow
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
Yellow
B
Orange
C
Purple
D
Green
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
Yellow
B
Pink
C
Blue
D
Green
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
25%
B
50%
C
100%
D
75%
15) If green leaves are dominant over yellow-striped leaves. What color leaves would you see with the genotype Rr.
A
Purple
B
Yellow striped
C
Orange
D
Green
16) If green leaves are dominant over yellow-striped leaves. What color leaves would you see with the genotype rr.
A
Yellow Striped
B
Orange
C
Purple
D
Green leaves
17) Mendel studied what type of plants
A
Strawberries
B
Peas
C
Apple
D
Cherries
18) Which one of these allele sets are homozygous?
A
Li
B
Rr
C
Qq
D
RR
19) The alleles in heterozygous are
A
two capital letters
B
one capital letter and one lower case
20) 6. An organism that has genes which are alike for a particular trait is called a
A
purebred
B
mutation
C
hybrid
D
cross bred
*select an answer for all questions
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