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WorksheetsGenetics/Evolution/Genetic engineering
Total questions: 17
Worksheet time: 11mins
Name
Class
Date
1.
How do scientists cut DNA into smaller strands?
a)
restriction enzymes
b)
scissors
c)
ligase
d)
agarose
2.
The process of making changes in the DNA code of a living organism is called
a)
selective breeding
b)
genetic engineering
c)
inbreeding
d)
hybridization
3.
Two organisms that are closely related would have
a)
very similar DNA sequence
b)
exactly the same DNA sequences
c)
no proteins in common
d)
completely different DNA sequence
4.
According to this cladogram, birds are LEAST related to -
a)
Amphibians
b)
Sharks
c)
Ray Finned Fish
d)
Crocodiles
5.
On the cladogram, which organism is the closest relative of the human?
a)
Frog
b)
Hare
c)
Caiman
d)
Parrot
6.
The bones of the forelimbs of the whale, the human and the bat are very similar. This indicates that they all may
a)
have descended from a common ancestor
b)
belong to the same species
c)
Have to range great distances to eat
7.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
8.
Which of the following terms refers to the different possibilities of a gene?
a)
chromosome
b)
DNA
c)
Punnett Squares
d)
allele
9.
A phenotype is the...
a)
letter combination
b)
dominant gene
c)
recessive gene
d)
physical appearance
10.
Tt is-
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
none of these
11.
Which of the following genotypes is homozygous recessive?
a)
RR
b)
Rr
c)
rr
d)
None of the Above
12.
Brown (B) is dominant over white (b). Which genotype is a purebred for brown fur?
a)
BB
b)
Bb
c)
bb
d)
All of the above
13.
Mutations are a change in what?
a)
DNA
b)
tRNA
c)
genotype
d)
phenotype
14.
The differences among a species, like different bird beaks, are called
a)
genes.
b)
variations.
c)
traits.
d)
theories.
15.
In order for natural selection to occur, what must exist in a species?
a)
Stability
b)
Low mutation rate
c)
Variation
16.
The process of man choosing organisms with the most desirable traits and mating them is known as
a)
Cloning
b)
Natural selection
c)
Selective breeding
17.
What number is the common ancestor of C and D
a)
1
b)
2
c)
4
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