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WorksheetsInheritance Review
Total questions: 19
Worksheet time: 37mins
Name
Class
Date
1.
If a snail could be green or brown, and a heterozygous green* snail mated with a brown snail, what would the genotypic ratio of their offspring be?
HINT: if the heterozygous genotype results in a green phenotype, which color is dominant?
HINT: if the heterozygous genotype results in a green phenotype, which color is dominant?
a)
1:2:1
b)
2:2
c)
3:1
d)
1:1
2.
If butterflies can have straight or curly antennae, and curly is recessive; what is the possibility (using %'age) that a pure breeding straight is crossed with a hybrid straight, will have offspring with straight antennae?
a)
25%
b)
50%
c)
75%
d)
100%
3.
The genetic makeup of an individual is known as its ...
a)
genotype
b)
phenotype
c)
alleles
d)
heterozygous
4.
The physical characteristics that result from genes is...
a)
phenotype
b)
genotype
c)
heterozygous
d)
homozygous
5.
A form of a trait that covers another trait is said to be...
a)
dominant
b)
recessive
c)
heterozygous
d)
homozygous
6.
Which gentotype would be considered heterozygous?
a)
Rr
b)
RR
c)
rr
d)
YY
7.
Different forms of the same gene are called
a)
alleles
b)
genetics
c)
p generation
d)
law of segregation
8.
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
9.
If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?
a)
100% Tt
b)
50% Tt, 50% tt
c)
75%Tt, 25%tt
d)
25%TT, 50%Tt, 25%tt
10.
Having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
11.
What type of inheritance do two alleles have if their traits blend together?
a)
Incomplete Dominance
b)
Co-Dominance
c)
Mendelian Inheritance
d)
Homozygous Inheritance
12.
A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:
a)
all black
b)
all white
c)
all gray
d)
speckled black and white
13.
In some carnations, flower color exhibits codominance. When crosses, Red (R) and white (W) flowers make speckled flowers (RW) that show both colors.
Complete a cross between 2 speckled flowers and find the genotype ratio.
Complete a cross between 2 speckled flowers and find the genotype ratio.
a)
0 RR: 4 RW: 0 WW
b)
2 RR: 2 RW: 0 WW
c)
1 RR: 2 RW: 1 WW
d)
0 RR: 2 RW: 2 WW
14.
In chickens, feather color is codominant. If a black chicken BB is mated with one that is black and white (BW) what are the chances of having a chicken that is black and white?
a)
50%
b)
0%
c)
25%
d)
100%
15.
A roan cow shows co-dominance in fur color (orange and white). What is the phenotype ratio expected if a roan cow and a roan bull mate together?
a)
4: Orange and White
b)
1: Orange : 1 White
c)
2 Orange: 2 Orange and White: 0 White
d)
1: Orange: 2 Orange and White: 1 White
16.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
17.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
18.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
19.
Polygenic traits are influenced by _____.
a)
several genes
b)
both by the environment and by genes
c)
linked genes
d)
codominant genes
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