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WorksheetsGenetics-Tutorial
Total questions: 22
Worksheet time: 33mins
Name
Class
Date
1.
The passing on of traits and behaviors from parents to their offspring is
a)
offspring
b)
heredity
c)
DNA
d)
genes
2.
What goes in box 3
a)
Aabb
b)
Abab
c)
AAbb
d)
aaBb
3.
Match the following combinations of alleles:
a)
Homozygous dominant
1.
DD
b)
Homozygous recessive
2.
dd
c)
Heterozygous
3.
Dd
4.
What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?
a)
Ry
b)
RRyy
c)
RrYy
d)
Rryy
5.
The genotypic percentage resulting from this this cross would be _____________________.
a)
25% blue eye 75 % brown eye
b)
BB = 25% Bb = 50% bb = 25%
c)
BB= 50 % bb = 50%
d)
All brown eye
6.
The genotypic percentage resulting from this this cross would be _____________________.
a)
25% blue eye 75 % brown eye
b)
BB = 25% Bb = 50% bb = 25%
c)
BB= 50 % bb = 50%
d)
All brown eye
7.
What term describes what you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
8.
Two heterozygous parents produce offspring. What is the probability of the HOMOZYGOUS DOMINANT GENOTYPE appearing in the offspring generation?
a)
75%
b)
25%
c)
50%
d)
100%
9.
A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?
a)
0%
b)
25%
c)
50%
d)
75%
10.
What are different forms of a gene called?
a)
Alleles
b)
Chromosomes
c)
Factors
d)
Traits
11.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
12.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
13.
This type of allele masks the recessive allele and is capital ________________
a)
Dominant
b)
Homozygous
c)
Genotype
d)
Phenotype
14.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
15.
What are different forms of a gene called?
a)
Alleles
b)
Chromosomes
c)
Factors
d)
Traits
16.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
17.
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
18.
How many boxes would say BB?
a)
1
b)
2
c)
4
d)
0
19.
What are the chances that the offspring will have homozygous recessive traits?
a)
1 in 4
b)
3 out of 4
c)
75%
d)
50%
20.
The dominant trait is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
21.
The genotypic ratio here is
a)
25% blue eye 75 % brown eye
b)
BB = 25% Bb = 50% bb = 25%
c)
BB= 50 % bb = 50%
d)
All brown eye
22.
What is the genotypic ratio represented by the punnett square?
a)
1:1
b)
3:1
c)
1:3
d)
1:2:1
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