WorksheetsUnit 2 Study Guide Genetics
Total questions: 18
Worksheet time: 9mins
In the 1900s, one idea in evolution was that inherited traits were blended into the next generation, with traits only available from an organism's parents. Which discovery caused a change in the scientific knowledge of evolution?
new technology that proved all variations in genes have equal chance of being passed on
Darwin interpreting his observation that finches living on the same island had different beak shapes
new evidence that proved the diversity of organisms always develops over a short amount of time
Mendel interpreting the results of his pea-plant experiment that showed dominant and recessive genes
The genotype where both alleles are the same is
Heterozygous
Dominant
Genotype
Homozygous
Jack bought a small turtle. Three months later, the turtle had grown to twice its original size. Which of the following statements best describes why Jack's turtle got bigger?
Parts of the turtle stretched out as it grew.
The turtle's cells went through the process of meiosis.
The turtle's cells went through the process of mitosis.
The turtle's cells absorbed all of the water that it drank.
Freckles are spots of pigment on the skin. Which statement provides the best argument supported by evidence that this trait is inherited through genetic material passed from parents to children?
People with specific gene alleles on a specific gene always have freckles.
Parents with freckles tend to have children with freckles.
Freckles frequently occur in people with red hair and pale skin.
People with a specific number and types of chromosomes always have freckles.
What determines gender in humans?
only the X chromosome
the X and Y chromosomes
chromosome 21
epistasis
What are the combined alleles of all individuals in a population called?
relative frequency
phenotype
genotype
gene pool
In a laboratory, several labels on the mouse cages were removed. The scientist who worked in the laboratory needed to determine which mice were clones and which were not in order to replace the labels correctly. What investigation would allow the scientist to determine which mice were clones?
sequencing the DNA of the mice
finding out what food the mice prefer
breeding the mice to see traits the offspring have
determining whether the mice can learn to complete a maze
In summer squash, the trait for fruit color is determined by two alleles, F and f. The Punnett square shows a cross between two summer squash with white-colored fruit. The cross produced 3 offspring with white-colored fruit and one with yellow-colored fruit. Based on the Punnett square, which of the following statements is true?
The cross produced 3 offspring with white-
colored fruit and one with yellow-colored fruit.
Based on the Punnett square, which of the
following statements is true?
The genotype FF produces white-colored fruit.
The genotype FF produces yellow-colored fruit.
The genotype Ff produces yellow-colored fruit.
The genotype ff produces white-colored fruit.
Select four organisms that reproduce sexually.
spiny anteaters
duckbill platypuses
dolphins
fungi
kangaroos
The picture shows yeast budding. Yeast reproduce asexually by budding, a process in which a bud breaks off the original yeast cell. Which of the following best describes a yeast bud?
Which of the following best describes a yeast
bud?
A yeast bud is genetically identical to the original
yeast cell.
A yeast bud has different mutations from the
original yeast cell.
A yeast bud has half as much genetic material
as the original yeast cell.
A yeast bud contains twice the genetic material
as the original yeast cell.
Strawberry plants are capable of reproducing sexually or asexually. When they reproduce sexually, how do the offspring receive their genetic material?
They receive all of their genetic material from a single parent.
They receive the majority of the genetic material from the male plant.
They receive half of their genetic material from each parent.
They receive the majority of the genetic material from the female plant.
A homozygous dominant parent and a homozygous recessive parent have offspring. What is true about the offspring?
The offspring are homozygous.
The offspring make up the F2 generation.
The offspring make up the parental generation.
The offspring are heterozygous.
The diagram below is of a Punnett square for the cross between two heterozygous flowers, Rr and Rr. Assuming the flowers in this cross display complete dominance, and the allele, R, is dominant for a red pigment and the allele, r, is recessive for a white pigment, what percent of the offspring will have red flowers?
25%
50%
75%
100%
The modern domesticated dog is thought to be descended from the wild wolf. There are currently many breeds of domesticated dogs which vary greatly in appearance. Which of the following best describes how the modern day dog has changed from its ancestor, the wolf?
Humans have cloned dogs for desirable traits,
causing many differences among breeds.
Humans have bred dogs for desirable traits,
causing many differences among breeds.
The modern dog gradually changed over time
due to natural selection.
The modern dog quickly changed due to
extinction.
Select three types of animals that have been selectively bred.
bears
pigs
lions
goats
cattle
A dog breeder selects only his best animals to breed. What is this process called?
natural selection
artificial selection
artificial variation
survival of the fittest
A student wants to complete a project on genetic engineering. He decides to set up a mock lab experiment to be performed on sheep. Which of the following experimental procedures relates most to genetic engineering?
injecting foreign genes into a sheep cell in a
petri dish
injecting foreign genes into sheep's milk in a
petri dish
injecting foreign genes into the muscle tissue of
a sheep
injecting foreign genes into the fertilized eggs of
a sheep
In Persian cats, a large round head, round eyes, short noses, and calm, sweet temperaments are desired traits. If a Persian cat breeder wanted to increase the likelihood that the offspring of his cat would have these traits, which of the following would be the best choice to breed his cat with?
A
B
C
All the above
