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WorksheetsSWYK LGE/F: Understanding Heredity
Total questions: 15
Worksheet time: 15mins
Name
Class
Date
1.
Dominant or recessive?
tt
tt
a)
Dominant
b)
Recessive
2.
Dominant or recessive?
Dd
Dd
a)
Dominant
b)
recessive
c)
neither
d)
homozygous
3.
The physical appearance of a gene:
a)
Genotype
b)
Heredity
c)
Phenotype
d)
Allele
4.
Homozygous or heterozygous?
BB
BB
a)
Homozygous
b)
Heterozygous
5.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
6.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
7.
A ________________________ is used to predict the possible genotype from certain parents
a)
Mendel Grid
b)
Genetic Tic Tac Toe
c)
Punnett Square
d)
Pedigree Plot
8.
What is the only Genotype that shows the RECESSIVE Phenotype?
a)
GG
b)
Gg
c)
gg
9.
What is a dominant allele?
a)
A trait that is always shown (capital letter)
b)
A trait that can be hidden (lower case letter)
c)
Alleles that are the same
d)
Alleles that are different
10.
What is Bb?
a)
Homozygous
b)
Heterozygous
c)
Recessive
d)
Mendel
11.
In the punnett square shown, what is the genotypes of the two parents?
a)
RW and RR
b)
RW and WW
c)
RR and WW
d)
RW and RR
12.
What are the two genotypes that show the DOMINANT Phenotype
a)
GG, gg
b)
GG, Gg
c)
Gg, gg
13.
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
a)
0 in 4
b)
1 in 4
c)
2 in 4
d)
4 in 4
14.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
15.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
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