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WorksheetsGenetics PTMS
Total questions: 26
Worksheet time: 23mins
Name
Class
Date
1.
Which of the following is heterozygous
a)
FF
b)
tt
c)
Gg
d)
RR
2.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
3.
Which of the following is homozygous dominant?
a)
Jj
b)
Rr
c)
MM
d)
ee
4.
The physical appearance of a trait is known as the-
a)
genotype
b)
phenotype
c)
characteristics
d)
intelligence
5.
How many letters does a genotype contain?
a)
1
b)
2
c)
3
d)
4
6.
Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's phenotype?
a)
Brown Hair
b)
Blonde Hair
c)
Brown and Blonde Hair
d)
Black Hair
7.
Chris is homozygous dominant. If W for widow's peak, and w is for no widow's peak, what is Chris' genotype?
a)
WW
b)
ww
c)
Ww
d)
wW
8.
What is a trait?
a)
physical characteristic
b)
homozygous dominant
c)
heterozygous
d)
genotype
9.
Which matches hybrid?
a)
homozygous
b)
heterozygous
c)
purebred
d)
recessive
10.
Which matches purebred?
a)
homozygous
b)
heterzygous
c)
hybrid
d)
dominant
11.
A homozygous dominant red flower and a heterozygous red flower cross. (white = recessive) What is the parent cross?
a)
RR x rr
b)
RR x Rr
c)
rr x Rr
d)
Rr x Rr
12.
A homozygous dominant red flower and a heterozygous red flower cross. (white = recessive) What are the possible phenotypes of the offspring?
a)
all red
b)
1/2 red and 1/2 white
c)
all white
13.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
14.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
15.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
16.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
17.
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
18.
specific portions of DNA that determine hereditary characteristics .
a)
Genotype
b)
Gene
c)
Phenotype
19.
___________________________ is the study of how traits are passed on, or inherited.
a)
dominant traits
b)
ratio
c)
phenotype
d)
genetics
20.
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
21.
Chromosomes are found in the ____________ of the cell
a)
Chloroplast
b)
Nucleus
c)
Cytoplasm
d)
Mitochondria
22.
How many are tall?
a)
0
b)
1
c)
2
d)
4
23.
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
24.
__________________ is a tool for tracing through generations of family members.
a)
Pedigree
b)
Probability
c)
Purebred
d)
Punnett Square
25.
Mutations can occur naturally or can occur from things such as radiation and chemical exposure.
a)
True
b)
False
26.
Any change in the sequence of DNA is...
a)
transgenic shift
b)
Single Genotype
c)
Monohybrid Trait
d)
Mutation
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