WorksheetsGenetics
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Heredity is defined as the passage of genetic instructions from one generation to the next. Which of the following is NOT an example of these genetic instructions in humans?
a)
Spoken language
b)
Height
c)
Skin color
d)
Dimples
2.
An organism inherits its genetic instructions from the
a)
Organism's offspring
b)
Organism's mating partner
c)
Organism's parents
d)
Organism's prey
3.
The passage of genetic instructions from one generation to the next is known as
a)
Commensalism
b)
Phenotype
c)
Traits
d)
Heredity
4.
Four puppies in the same litter have different hair color than the mother dog. Which of the following processes is responsible for the variety of hair color in this litter?
a)
Sexual reproduction
b)
Asexual reproduction
c)
Binary Fission
d)
Regeneration
5.
A student hypothesizes that green pod color in pea plants is dominant and yellow pod color is recessive. Which observation would disprove this hypothesis?
a)
Two plants with green pods produce an offspring with green pods.
b)
Two plants with yellow pods produce an offspring with green pods.
c)
Two plants with green pods produce an offspring with yellow pods.
d)
Two plants with yellow pods produce an offspring with yellow pods.
6.
African violets are plants that can be grown from leaf cuttings. The cuttings from both roots and shoots. How does the genetic material of the offspring of new plants grown from cuttings compare to the genetic material of the parent plant?
a)
more material than the parent plant
b)
less material than the parent plant
c)
equal in amount, but with distinct differences
d)
equal in amount and identical
7.
Compared with the genetic material of the original cell in the diagram above, each of the two new cells contains
a)
half the genetic material of the parent cell
b)
twice as much genetic material as the parent cell
c)
genetic material that is identical to the parent cell
d)
new genetic material that is different from that of the parent cell
8.
The hydra is a very small, simple animal that lives in water. Hydras reproduce asexually by budding, a process in which a bud breaks off an adult hydra and floats away.Which of the following best describes a hydra bud?
a)
A hydra bud is genetically identical to the parent hydra.
b)
A hydra bud contains genetic material from its two parents.
c)
A hydra bud has half as much genetic material as the parent hydra.
d)
A hydra bud has different mutations than the parent hydra.
9.
Cystic fibrosis is a genetic disorder in which a particular gene does not make protein the way that it otherwise normally would. Given that cystic fibrosis is a genetic disorder, how would an individual most likely contract this disease?
a)
A person’s parents would have to carry genetic material for cystic fibrosis within their mitochondria which could then be passed down.
b)
Genetic disorders can be inherited in so many ways that it is impossible to tell how a person acquired the disease.
c)
A person’s parents would have to carry genetic material for cystic fibrosis within their chromosomes which could then be passed down.
d)
A person would have to have been exposed to environmental influences such as living next to a nuclear power plant.
10.
The physical traits that are present in an organism.
a)
Physical Features
b)
Genotype
c)
Phenotype
d)
Personality
11.
One cat carries heterozygous, long-haired traits (Ss), and its mate carries homozygous short-haired traits (ss). Use a Punnett square to determine the probability of one of their offspring having long hair.
a)
100%
b)
75%
c)
50%
d)
25%
12.
One flower is homozygous red (RR) and it is crossed with a homozygous white (rr) plant. Use a Punnett square to determine the probability of one of their offspring having a red color.
a)
100%
b)
75%
c)
50%
d)
25%
13.
Punnett squares are used by geneticists to determine the probability of different offspring genotypes. In the one shown below, what letter(s) belong in the lower right box?
a)
AA
b)
Aa
c)
aa
d)
a
14.
If two people who are both carriers for a genetically inherited fatal recessive disease decide to become parents, what will be the odds that their children will also be carriers? (Hint: Both parents are heterozygous. The disease is a recessive trait.)
a)
4 out of 4
b)
3 out of 4
c)
2 out of 4
d)
1 out of 4
15.
Organisms that have two different alleles, one dominant and one recessive, for a particular trait are said to be
a)
Dominant
b)
Recessive
c)
Heterozygous
d)
Homozygous
16.
Certain species of whiptail lizards have only female individuals and no males. These lizards reproduce asexually. What is one disadvantage of asexual reproduction for these lizards?
a)
All the members of a population are genetically very similar and less able to survive environmental changes.
b)
A new population can be established by a single individual in a relatively short period of time.
c)
They are smaller than lizards that reproduce sexually.
d)
They are more likely to develop a variety of tail lengths.
17.
A diagram that geneticists use to predict the outcome of particular breeding experiments is known as
a)
Dichotomous Key
b)
Taxonomy Chart
c)
Taxidermy Chart
d)
Punnett Square
18.
During asexual reproduction in one-celled algae, a single algae becomes two new algae. The genetic material in each of the daughter cells is usually
a)
totally different from the parent cell
b)
half the number of genes
c)
twice the number of genes
d)
the same number of genes
19.
During asexual reproduction in paramecium, a single paramecium becomes two new paramecia. The genetic material of the new paramecia is usually
a)
half the amount of the original
b)
identical to the original
c)
double the amount of the original
d)
similar to the original
20.
Trait that shows up in the offspring as long as one of the parents has that trait.
a)
Strong trait
b)
Dominant trait
c)
Recessive trait
d)
Superior trait
100 %
