WorksheetsHereditary Review
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Where is all the genetic information in a cell?
a)
Nucleus
b)
Nucleotides
c)
Chromosomes
d)
Cytoplasm
2.
How many chromosomes do you get from each parent?
a)
22
b)
23
c)
44
d)
46
3.
Where are genes located?
a)
On the chromosome, in the nucleus
b)
On the nucleus inside the chromosome
c)
on the ribosome in the mitochondria
d)
on the moon
4.
How is tossing a coin the same as a Pp parent giving a gene to an offspring?
a)
they are not the same
b)
there is a 50% chance of getting either allele, there is a 50% chance of getting heads or tails
c)
there is a 100% chance of getting the one you want
d)
there is a 25% chance of getting either allele, there is a 25% chance of getting heads or tails
5.
A plant with two dominant or two recessive alleles is said to be
a)
heterozygous
b)
homozygous
c)
cross pollinating
6.
The one thing that Gregor Mendel realized could explain the results of his experiments was that
a)
the traits were appearing at random
b)
the male traits were always the dominant ones
c)
each trait had two sets of instructions, one from each parent
d)
his important research would open the door to modern genetics
7.
The different forms of a gene that determine a characteristic are known as
a)
alleles
b)
albinism
c)
phenotype
d)
genes
8.
What is heredity?
a)
traits passing from offspring to parents
b)
plants that are cross-pollinated
c)
traits passing from parents to offspring
d)
the ratio of dominant to recessive traits
9.
What is a phenotype?
a)
the way an organism feels
b)
a dominant gene
c)
a group of 5 alleles
d)
the way an organism looks
10.
An organism's inherited alleles together form its
a)
phenotype
b)
pedigree
c)
genotype
d)
probability
11.
Explain the difference between dominant and recessive traits.
a)
when paired up, dominant traits will cover up recessive traits
b)
dominant traits are better than recessive traits
c)
recessive traits cover up dominant traits
d)
recessive traits are better than dominant traits
12.
There are no carriers for Huntington's Disease- you either have it or you don't. Is Huntington's disease caused by a dominant or recessive trait?
a)
Dominant
b)
Recessive
13.
Is hitchhiker's thumb dominant or recessive? The carriers are not marked. Should there be carriers in this pedigree?
a)
Dominant
b)
Recessive
14.
What do we use pedigrees for?
a)
To look at families
b)
To make determinations about the offspring
c)
To track traits in families
d)
Nothing
15.
Who would use a pedigree?
a)
Doctor
b)
Scientist
c)
Grandma
d)
All of the above
16.
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
17.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
18.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
19.
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
In the punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
20.
What is the gender of the individual whose karyotype is seen in the image?
a)
Male
b)
Female
100 %
