NEW
Font size
S
M
L
XL
WorksheetsTraits and Inheritance
Total questions: 20
Worksheet time: 40mins
Name
Class
Date
1.
If a plant with the genotype Pp is allowed to self populate, what are the possible genotypes of the offspring?
a)
PP,pp,pp,PP
b)
Pp, Pp, Pp, Pp
c)
Pp, PP, pp, PP
d)
PP, Pp, pP, pp
2.
One of the alternative forms of a gene that governs a characteristic is a what?
a)
gene
b)
genotype
c)
allele
d)
phenotype
3.
An organism's appearance or other detectable characteristic is a what?
a)
phenotype
b)
gene
c)
allele
d)
genetic variation
4.
An example of how several genes influence one trait is...
a)
eye color and fur color in a white tiger
b)
whether a pea flower is purple or white
c)
whether a pea seed is smooth or wrinkled
d)
Shades of eye color in humans
5.
The entire genetic makeup of an organism or the combination of genes for one or more specific traits is....
a)
genetic variation
b)
genotype
c)
gene
d)
allele
6.
If a plant with the genotype PP is crossed with a plant with the genotype pp, what are the possible genotypes of the offspring?
a)
PP, Pp, pP, pp
b)
PP. pp. pp. PP
c)
Pp, Pp, Pp, Pp
d)
Pp, PP, pp, PP
7.
What is one set of instructions for an inherited trait?
a)
gene
b)
allele
c)
phenotype
d)
genotype
8.
The mathematical chance that something will happen is known as what?
a)
product
b)
possibility
c)
percentage
d)
probability
9.
The differences in the sets of alleles between individuals in a population is...
a)
allele
b)
genotype
c)
genetic variation
d)
gene
10.
What kind of traits seem to disappear in the first generation?
a)
genotypes
b)
phenotypes
c)
dominant traits
d)
recessive traits
11.
What type of plant is the offspring of the first cross?
a)
a true-breeding plant
b)
a second-generation plant
c)
a self-pollinated plant
d)
a first-generation plant
12.
What is the Punnett square used to predict?
a)
possible genotypes for the cross
b)
which traits are dominant
c)
which traits are recessive
d)
the number of offspring
13.
Some grasshoppers eat certain plants and consequently develop a yellow and black coloration because their genes are influenced by what?
a)
their phenotype
b)
their mitochondria
c)
their external environment
d)
their internal environment
14.
In the first cross that Mendel did, why were the anthers removed from the white-flowered pea plant?
a)
so the plant could self-pollinate
b)
so the plant could not self-pollinate
c)
so the plant could no cross-pollinate
d)
so the plant could not be fertalized
15.
Before Mendel's experiments about heredity, people explained how traits came from both parents with the idea of...
a)
proportionate inheritance
b)
mixed inheritance
c)
blending inheritance
d)
Mendelian inheritance
16.
Traits passing from parents to offspring are?
a)
meiosis
b)
genetic variation
c)
mitochondria
d)
heredity
17.
What is the ratio of dominant traits to recessive traits in second-generation plants?
a)
1:1
b)
2:1
c)
3:1
d)
4:1
18.
Which of the following traits are influenced by more than one gene?
a)
fur color in a white tiger
b)
the shades of human eye colors
c)
whether a pea seed is wrinkled or smooth
d)
whether a pea flower is purple or white
19.
What is one internal environmental condition that can influence a person's height?
a)
sunlight
b)
age
c)
genotype
d)
nutrition
20.
The difference in the set of alleles that produce skin color in a population of corn snakes are called
a)
organic difference
b)
genetic variable
c)
organic variation
d)
genetic variation
Reset
