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WorksheetsGenetics 1 Cochran
Total questions: 10
Worksheet time: 6mins
Name
Class
Date
1.
Which genotype is considered purebred?
a)
TT
b)
Tt
c)
tt
2.
An organism's genotype describes its __________.
a)
genetic makeup
b)
physical appearance
3.
This field of science is the study of how genetic information is passed from parent to offspring.
a)
Ecology
b)
Genetics
c)
Geology
d)
Chemistry
4.
Round seeds (R) are dominant to wrinkled seeds (r). What is the genotype for a wrinkled offspring?
a)
RR
b)
Rr
c)
rr
5.
Scientists use __________ to show what genotype combinations are possible.
a)
Punnett Square
b)
Mendel Square
c)
Madison Square
d)
Times Square
6.
Purebred is another word for __________, while hybrid is another word for __________.
a)
dominant; recessive
b)
recessive; dominant
c)
homozygous; heterozygous
d)
heterozygous; homozygous
7.
Black fur (B) is dominant. Find the probability of a black offspring in a cross: bb x bb.
a)
0%
b)
25%
c)
50%
d)
100%
8.
A dominant trait shows up __________.
a)
only when two dominant alleles are present
b)
only when one dominant allele is present
c)
when at least one recessive allele is present
d)
when at least one dominant allele is present
9.
__________ worked with pea plants to prove that traits are passed from parent to offspring.
a)
Reginald Punnett
b)
Gregor Mendel
10.
If you cross two parents, both with genotype Bb, what percentage of children will have brown eyes?
a)
25%
b)
50%
c)
75%
d)
100%
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