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WorksheetsGregor Mendel and Punnet Square Review
Total questions: 20
Worksheet time: 14mins
Name
Class
Date
1.
What organism did Mendel do his famous studies of genetics with?
a)
bees
b)
carrots
c)
peas
d)
mice
2.
What is cross pollination?
a)
When pollen from a flower fertilizes itself or another flower on the same plant
b)
When pollen from one flower fertilizes a flower on a different plant
c)
A plant whose offspring share the same traits as the parent
d)
A plant whose offspring is genetically different from the parent.
3.
What is true-breeding?
a)
When pollen from a flower fertilizes itself or another flower on the same plant
b)
When pollen from one flower fertilizes a flower on a different plant
c)
A plant whose offspring share the same traits as the parent
d)
A plant whose offspring is genetically different from the parent.
4.
If Mendel's first experiment involved cross-pollinated a true-breeding round pea plant and a true-breeding wrinkled pea plant, what would the genotypes of the parents have to be?
a)
RR x Rr
b)
Rr x Rr
c)
rr x rr
d)
RR x rr
5.
What did Gregor Mendel discovery in the results of his first experiment?
a)
Only the dominant trait appeared!
b)
The offspring were all different!
c)
Only the recessive trait appeared!
d)
The plants were more healthy
6.
Originally, Mendel crossed two true breeding plants (RR x rr) for Round and Wrinkled peas. What is the genotype(s) of the offspring that he then allowed to self-pollinate in the first generation?
a)
RR x Rr
b)
Rr x Rr
c)
rr x RR
d)
rr x Rr
7.
If you cross two heterozygous traits (Rr x Rr), as Mendel did in his second experiment, what ratio will you get between offspring with the dominant and recessive phenotypes
a)
1:1
b)
2:1
c)
3:1
d)
4:1
8.
A trait that is not expressed when a dominant allele is present.
a)
Recessive
b)
Co-dominant
c)
Incomplete Dominant
d)
Dominant
9.
The combination of alleles.
a)
DNA
b)
Phenotype
c)
Genotype
d)
Genetics
10.
The physical or behavioral appearance of a trait
a)
Phenotype
b)
DNA
c)
Genotype
d)
Genetics
11.
Which of the following genotypes is homozygous recessive?
a)
RR
b)
Rr
c)
rr
d)
None of the Above
12.
Brown (B) is dominant over white (b). Which genotype is a purebred for brown fur?
a)
BB
b)
Bb
c)
bb
d)
All of the above
13.
If something is heterozygous, it is also...
a)
purebred
b)
hybrid
c)
dominant
d)
recessive
14.
True/False: Different genotypes can code for the same phenotype.
a)
True
b)
False
15.
This image shows a...
a)
Punnett Square
b)
Phenotype
c)
Genotype
d)
Dominant allele
16.
What does a Punnett Square help you do?
a)
Determine the ratio of phenotypes
b)
Determine the ratio of genotypes
c)
Predict possible traits the offspring will have
d)
All of the above
17.
Dominant alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
18.
Purple is dominant to white. A heterozygous purple flower is crossed with a white flower. What are the genotypes and phenotypes of the offspring?
a)
100% Pp (purple)
b)
50% Pp (purple); 50% pp (white)
c)
75% Pp (purple); 25% pp (white)
d)
25% PP, 50% Pp, 25% pp
75% purple, 25% white
75% purple, 25% white
19.
What is the genotype for this organism?
(E= 3 eyes, e= 1 eye)
(E= 3 eyes, e= 1 eye)
a)
EE
b)
Ee
c)
ee
d)
EE or Ee
20.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
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