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WorksheetsGED Genetics
Total questions: 16
Worksheet time: 34mins
Name
Class
Date
1.
The outward characteristics that people show due to their genetics....
a)
Homozygous
b)
Heterozygous
c)
Genotype
d)
Phenotype
2.
Brown is dominant to green. What is the probability of these parents having green offspring?
a)
25%
b)
50%
c)
75%
d)
100%
3.
What would go into punnet square 1
a)
BB
b)
Bb
c)
bb
d)
all choices
4.
What is the genotypic ratio here?
a)
TT = 25% : Tt= 50% : tt=25%
b)
TT = 100%
c)
TT= 75% : tt = 25%
d)
Tt = 100%
5.
If Albinism is a recessive trait represented by (a), what is the percentage of offspring will be Albino?
a)
25%
b)
50%
c)
75%
d)
100%
6.
In pea plants, the tall allele is dominant to the short allele. What key would demonstrate this?
a)
Tall = T
Short = S
Short = S
b)
Tall = T
Short = t
Short = t
c)
Tall = t
Short = T
Short = T
d)
Tall = TT
Short = tt
Short = tt
7.
A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?
a)
0%
b)
25%
c)
50%
d)
75%
8.
Dominant or recessive?
tt
tt
a)
Dominant
b)
Recessive
9.
Dominant or recessive?
Dd
Dd
a)
Dominant
b)
recessive
c)
neither
d)
homozygous
10.
What should students use to identify the percent chance of a trait being passed down from a parent to its offspring?
a)
a graph
b)
a flow chart
c)
a data table
d)
a Punnett square
11.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
12.
What is a phenotype?
a)
The expression of a trait; physical appearance.
b)
refers to the genetic makeup of an individual
c)
An organism that has the same genes for a trait (ex. TT or tt)
d)
the passing of traits from parent to offspring
13.
Homozygous or heterozygous?
BB
BB
a)
Homozygous
b)
Heterozygous
14.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
15.
Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?
a)
25%
b)
1%
c)
10%
d)
0%
16.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
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