Worksheetsheridity form 4
Total questions: 14
Worksheet time: 14mins
Name
Class
Date
1.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
2.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
3.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
4.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
5.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
6.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
7.
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
8.
Aa is
a)
homozygous
b)
heterozygous
9.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
10.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
11.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
12.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender
d)
all of the above
13.
Segments of DNA (Deoxyribonucleic acid) found in chromosomes that give instructions for producing a certain characteristic.
a)
heredity
b)
gene
c)
allele
d)
genotype
e)
phenotype
14.
This trait always shows up in an organism when the allele is present
a)
dominant allele
b)
codominance
c)
probability
d)
recessive allele
100 %
