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WorksheetsLife Science Review
Total questions: 68
Worksheet time: 1hrs 10mins
Name
Class
Date
1.
The man who studied genetics and came up with genetics is
a)
Watson
b)
Crick
c)
Mendel
d)
Darwin
2.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
3.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
4.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
5.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
6.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
7.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
8.
What is the phenotype of the heterozygous parent in the punnett square?
a)
green
b)
yellow
c)
hybrid
d)
purebred
9.
Which of the following genotypes would be considered heterozygous?
a)
BB
b)
gg
c)
Ff
d)
TT
10.
W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
a)
none
b)
3/4
c)
1/2
d)
all
11.
Pairs of genes that control the same trait are known as
a)
allelles
b)
gametes
c)
hybrids
d)
loci
12.
Humans have 23 ____________ pairs.
a)
genes
b)
chromosomes
c)
enzymes
d)
DNA
13.
A round watermelon is crossed with a long watermelon and all the offspring are oval. If two oval watermelons are crossed, what is the percent of watermelons that will be round?
a)
0%
b)
25%
c)
50%
d)
75%
14.
A round watermelon is crossed with a long watermelon and all the offspring are oval. This is an example of...
a)
codominance.
b)
incomplete dominance.
c)
sex-linkage.
d)
multiple alleles.
15.
The expression of both alleles for a trait in a heterozygous individual is called...
a)
sex-linkage.
b)
epistasis.
c)
codominance.
d)
incomplete dominance.
16.
Chromosomes are found in the __________ of a eukaryotic cell.
a)
chloroplast
b)
nucleus
c)
cytoplasm
d)
mitochondria
17.
One trait that is ALWAYS present and causes the other traits to disappear is a...
a)
recessive trait.
b)
aggressive trait.
c)
George trait.
d)
dominant trait.
18.
A __________ is used to predict the possible genotypes from certain parents.
a)
Mendel Grid
b)
Genetic Tic-Tac-Toe
c)
Punnett Square
d)
Pedigree Foursquare
19.
__________ is the mathematical chance that something will happen.
a)
Division
b)
Selective breeding
c)
Ratio
d)
Probability
20.
Are recessive traits shown with capital or lowercase letters?
a)
Capital
b)
Lowercase
c)
Both
d)
Neither
21.
How would you describe this genotype? BB
a)
Homozygous dominant
b)
Heterozygous
c)
Heterozygous dominant
d)
Homozygous recessive
22.
How would you describe this genotype? tt
a)
Homozygous dominant
b)
Homozygous recessive
c)
Heterozygous
d)
Heterozygous recessive
23.
How would you describe this genotype? Pp
a)
Homozygous dominant
b)
Heterozygous dominant
c)
Heterozygous
d)
Heterozygous recessive
24.
Which of the following genotypes is homozygous dominant?
a)
Hh
b)
pp
c)
HH
d)
aa
25.
Which of the following genotypes is heterozygous?
a)
Hh
b)
gg
c)
HH
d)
GG
26.
In dragons, scale color shows incomplete dominance. If a red (RR) dragon mates with a white (rr) dragon, what percentage of their offspring could be pink?
a)
100%
b)
75%
c)
50%
d)
0%
27.
How many individuals are there in the 3rd generation?
a)
2
b)
3
c)
4
d)
6
28.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
29.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
30.
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
31.
Dominant or recessive?
Dd
Dd
a)
Dominant
b)
recessive
c)
neither
d)
homozygous
32.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
33.
one set of instructions for an inherited trait
a)
heredity
b)
allele
c)
trait
d)
gene
34.
You get your genes from:
a)
Department Store
b)
Parents
c)
Aunt
d)
Neighbor
35.
aa always shows up as
a)
dominant
b)
recessive
36.
The process of producing offspring
a)
Reproduction
b)
Copulation
c)
Parturition
d)
Fertilization
37.
Requires two parents
a)
sexual
b)
asexual
38.
1. What is an adaptation?
a)
A characterisitic that helps an animal survie.
b)
The genetic code in the DNA.
c)
A theory that all organisms are connected and come from a distant relative.
39.
Grasshopper cannot be easily seen on green leaves. How has this adaptation allowed grasshoppers to be successful?
a)
a.They can be easily seen by predators
b)
a.They can find food more easily
c)
a.They are not attacked by predators, and can reproduce
40.
How many parent(s)are needed for asexual?
a)
4
b)
1
c)
9
d)
100
41.
When a starfish grows a new body off a broken arm, what kind of reproduction is this?
a)
Sexual
b)
Differentiation
c)
Asexual
d)
Specialization
51.
This produces 2 identical cells.
a)
mitosis
b)
meiosis
43.
If two organisms reproduce sexually, then their offspring will exhibit a genetic makeup that is -
a)
identical to only one parent
b)
identical to all of its siblings
c)
a unique combination of traits
d)
the recessive traits of each parent
44.
When comparing the offspring of sexually and asexually reproducing organisms, we would expect the genetic material (DNA) of the sexually reproducing organism to -
a)
contain fewer mutations
b)
be lesser in quantity
c)
be simpler overall
d)
show more variation
45.
What are some of the facts about asexual reproduction?
a)
Takes only one mate to reproduce and takes a longer time to reproduce
b)
Takes a shorter amount of time to reproduce and it takes two mates to reproduce
c)
Reproduces diverse offspring and takes a longer time to reproduce
d)
Takes only one mate to reproduce and takes a shorter time to reproduce
46.
Tongue rolling, earlobes, dimples, and freckles are all examples of....
a)
Purebreds
b)
Genotypes
c)
Traits
d)
Pedigrees
47.
female sex cell
a)
zygote
b)
egg
c)
sperm
d)
meiosis
48.
male sex cell
a)
egg
b)
zygote
c)
sperm
d)
diploid cell
49.
process by which one diploid cell divides into four haploid cells
a)
mitosis
b)
meiosis
c)
homologous chromosomes
50.
The scientific study of heredity
a)
Genetics
b)
Allele
c)
Dominant
d)
Biology
51.
This produces 2 identical cells.
a)
mitosis
b)
meiosis
52.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
53.
Sexual reproduction requires _____ parents and asexual reproduction requires ___ parents
a)
1,1
b)
2,2
c)
2,1
d)
1,2
54.
The purpose of meiosis is to form ________ cells.
a)
body
b)
sex
c)
somatic
d)
brain
55.
How many daughter cells are produced at the end of meiosis?
a)
1
b)
2
c)
3
d)
4
56.
During meiosis the resulting gametes have _______ the number of chromosomes as the parent cell.
a)
double
b)
triple
c)
half
d)
a quarter
57.
The image illustrates which process?
a)
Mitosis
b)
Meiosis
c)
photosynthesis
d)
respiration
58.
Takes place all over the body
a)
Mitosis
b)
Meiosis
c)
Both Mitosis and Meiosis
59.
Mitosis produces
a)
gametes (sex)
b)
somatic cells (body)
c)
reproductive cells
d)
none of the above
60.
How do adaptations help animals?
a)
to hide from predators
b)
to hunt for food
c)
to survive in their habitats
d)
All of these are correct
61.
The goal of every species on earth is...
a)
to survive and reproduce
b)
divide and conquer
c)
survive and conquer
d)
reproduce and die
62.
All of the fossils that scientists have recovered from the ground.
a)
geologic time scale
b)
natural selection
c)
fossil record
d)
mass extinction
63.
How many species of life are there?
a)
dozens
b)
hundreds
c)
thousands
d)
millions
64.
Which of the following is a term for a group of similar organisms that can reproduce fertile offspring?
a)
individual
b)
population
c)
species
d)
fossil
65.
Finches on the Galapagos Islands had different beaks in order to help them do what?
a)
Build nests
b)
Fight off predators
c)
Collect food sources
66.
Butterflies blending their wing color with their environment is an example of what?
a)
Adaptation
b)
Evolution
c)
Camouflage
d)
None of the above
67.
This scientist came up with the idea of natural selection.
a)
Robert Hooke
b)
Gregor Mendel
c)
Charles Darwin
d)
Thomas Mach
68.
This occurs when no more of a species is living.
a)
Fossilization
b)
Adaptation
c)
Extinction
d)
Natural selection
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