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WorksheetsGenetics
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
The female gamete is the
a)
egg cell
b)zygote
c)sperm cell
d)hybrid
2.
Simple Mendelian genetics is called
a)polygenic inheritance
b)incomplete dominance
c)codominant inheritance
d)dominant /recessive inheritance
3.
Gametes have
a)the same number of chromosomes as the offspring
b)half the normal number of chromosomes
c)the same number of chromosomes as the parents
d)twice the normal number of chromosomes
4.
The genes (or gene combinations) that could be passed from a parent to its offspring are the
a)
gamete possibilities
b)
chromosome probabilities
c)
offspring possibilities
d)
phenotype probabilities
5.
Meiosis only occurs in
a)zygotes
b)males
c)reproductive organs
d)females
6.
Cell division that produces gametes is called
a)
evolution
b)
heredity
c)
mitosis
d)
meiosis
7.
Gametes have
a)one gene for a trait
b)two genes for a trait
c)twice the normal number of genes
d)
many genes for a trait
8.
A term for when the two genes for a trait are the same.
a)
hybrid
b)
pure
c)
expression
d)
alleles
9.
The passing of traits from parent to offspring is called
a)evolution
b)heredity
c)genetics
d)natural selection
10.
Which is NOT true of Mendel's work?
a)
He kept accurate records.
b)
He used the scientific method.
c)
He only used a few samples.
d)
He worked with pea plants.
11.
The number of gamete possibilities is
a)times 2 for each hybrid in the genotype.
b)the same as the number of hybrids in the genotype.
c)the same for all genotypes.
d)times 2 for each trait in the genotype.
12.
A term for when the two genes for a trait are different is
a)hybrid .
b)pure .
c)phenotype .
d)expression .
13.
The expression of the trait that shows up when there is only one gene for that expression.
a)
alleles
b)
recessive
c)
hybrid
d)
dominant
14.
Genes are
a)all reproductive.
b)always different for a trait.
c)on chromosomes.
d)the same for all traits.
15.
Where does an individual get its genes for a trait?
a)
one from each parent
b)
from the Punnett square
c)all from the recessive parent
d)all from the dominant parent
16.
The Austrian monk who is considered the "father of genetics" is
a)
Charles Darwin
b)
Anton van Leuweenhoek
c)
Aristolte
d)
Gregor Mendel
17.
A term for when the two genes for a trait are the same is
a)heterozygous .
b)dominant .
c)phenotype .
d)homozygous .
18.
Characteristics controlled by the genes are called
a)gamete possibilities.
b)
traits.
c)gametes .
d)alleles .
19.
Reproductive cells, or sex cells, are called
a)
homologous.
b)dominant .
c)gametes .
d)traits .
20.
The expression of a trait that only shows up when both genes for the trait are for that expression is
a)dominant .
b)
recessive.
c)homozygous .
d)genotype .
21.
a)half the normal number
b)one
c)two
d)many
22.
In most cells, genes for traits
a)in pairs.
b)in gametes.
c)reproductive .
d)recessive .
23.
The two chromosomes of a pair, having genes for the same traits, are said to be
a)dominant .
b)homologous .
c)hybrid .
d)identical .
24.
The male gamete is the
a)
zygote.
b)egg cell .
c)sperm cell.
d)Punnett square.
25.
The word for how the trait appears because of the genes is
a)alleles .
b)phenotype .
c)genotype .
d)homologous .
26.
A cross between two individuals who are heterozygous for two traits is a( n)
a)homologous cross.
b)
gene cross.
c)monohybrid cross.
d)dihybrid cross.
27.
A term for when the two genes for the trait are different is
a)
homologous.
b)
heterozygous.
c)
gamete.
d)
homozygous.
28.
A cross between two individuals who are heterozygous for a single trait is a(n)
a)
monohybrid cross.
b)
dihybrid cross.
c)
gene cross.
d)
pure cross.
29.
The letters used to represent the actual genes present for the trait.
a)
gametes
b)
alleles
c)
genotype
d)
phenotype
30.
A segment of a chromosome that controls a trait is a(n)
a)allele .
b)gene .
c)gamete .
d)Punnett square.
31.
The chart used to determine genetic probability from a cross is called a(n)
a)
genetic square.
b)
Mendel square.
c)Punnett square.
d)
Darwin square.
32.
The different forms of the gene for a trait are
a)gametes .
b)offspring .
c)chromosomes .
d)alleles .
33.
How a trait shows up (appears) in the individual is the
a)heredity of the trait.
b)expression of the trait.
c)genotype of the trait.
d)alleles of the trait.
34.
The study of the passing of traits is called
a)genetics .
b)heredity .
c)geneology .
d)natural selection.
35.
The phenotype ratio of a monohybrid cross is
a)
1:2:1
b)
3:1
c)
9:3:3:1
d)
1:1:2:2:4:2:2:1:1
36.
The phenotype ratio of a dihybrid cross is
a)
3:1
b)
1:2:1
c)
9:3:3:1
d)
1:1:2:2:4:2:2:1:1
37.
The genotype ratio of a monohybrid cross is
a)
3:1
b)
1:2:1
c)
9:3:3:1
d)
1:1:2:2:4:2:2:1:1
38.
The genotype ratio of a dihybrid cross is
a)
3:1
b)
1:2:1
c)
9:3:3:1
d)
1:1:2:2:4:2:2:1:1
39.
The second step of the scientific method is
a)record and analyze data.
b)define the problem.
c)
research.
d)experiment .
40.
The first step of the scientific method is
a)
draw a conclusion.
b)
experiment.
c)
form an hypothesis.
d)
define the question or problem.
41.
The third step of the scientific method is
a)research .
b)form an hypothesis.
c)experiment .
d)draw a conclusion.
42.
The fourth step of the scientific method is
a)experiment .
b)define the problem.
c)research .
d)draw a conclusion.
43.
The fifth step of the scientific method is
a)form an hypothesis.
b)draw a conclusion.
c)record and analyze data.
d)research .
44.
The last step of the scientific method is
a)draw a conclusion.
b)experiment .
c)research .
d)record and analyze data.
45.
If red is dominant over white, the homozygous dominant genotype would be
a)
RR
b)
RW
c)
Rr
d)
rr
46.
If long is dominant over short, the heterozygous genotype would be
a)
Ls
b)
ss
c)
Ll
d)medium
47.
If brown is dominant over yellow, the recessive genotype would be
a)
Bb
b)
yellow
c)
yy
d)
bb
48.
If red is dominant over white, the heterozygous phenotype would be
a)pink .
b)red .
c)white .
d)
Rr
49.
If big ears is dominant over small ears, a dominant gene would be represented using
a)
E
b)
B
c)
S
d)
D
50.
If big eyes is dominant over small eyes, a recessive gene would be represented using
a)
e
b)
s
c)
S
d)
b
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