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WorksheetsG11 Av Biology - Module 10 Assessment
Total questions: 25
Worksheet time: 13mins
If a black guinea pig (Bb) were crossed with a white guinea pig (bb) what would be the resulting phenotypic ratio?
0:1 black to white
1:0 black to white
1:1 black to white
3:1 black to white
Which gamete can not come from an individual that has a genotype of YyRr?
YY
YR
yr
Yr
A cat with curled ears was crossed with a cat with non-curled ears. All the kittens born from that cross had non-curled ears. Later, when these offspring were crossed with each other, the phenotypic ratio was 3:1 non-curled to curled ears. Which conclusion can be made?
Curled ears are a recessive trait.
More crosses need to be done to determine how the trait is linked.
It is a dominant trait.
Curled ears are a result of crossing over.
Which describes an individual that is represented by Bb in a Mendelian cross?
homozygous
parental
recessive
heterozygous
Which is not true about polyploidy?
It is caused by crossing over.
It never occurs in animals.
It can produce hardy and vigorous plants.
It is lethal in humans.
Which does not contribute to genetic variation?
number of chromosomes
crossing over
meiosis
random mating or random parental partners
A housefly has six pairs of chromosomes. If two houseflies are crossed, how many possible types of fertilized eggs could result from the random lining up of the pairs?
256
4096
1024
16,384
Based on the chromosome map shown, which two alleles have the least frequency of crossing over?
r and y
y and w
y and v
y and m
The new combination of genes produced by crossing over and independent assortment is called:
gene linkage
polyploidy
crossing over
genetic recombination
Which concept is considered an exception to Mendel’s law of independent assortment?
crossing over
gene linkage
polyploidy
haploidy
Which term describes the process in which people cross parent organisms with different forms of a trait to produce offspring with specific traits?
inbreeding
pure breeding
hybridization
test crossing
Which is a disadvantage of inbreeding?
It is expensive.
It can maintain purebreeds.
It has an increased chance of passing on harmful or undesired recessive traits.
It increases genetic diversity (variety).
What is the genotypic ratio of the offspring in the cross shown?
1 : 2 : 1
1 : 1
3 : 1
1 : 2
Which phenotypic ratio will result if a parent homozygous dominant for a trait is used in a test cross?
1 or 100%
1 : 2 : 1
1 : 1 or 50%-50%
3 : 1
Chromosomes 1-22 in humans which contain genes for characteristics unrelated to sex are called:
autosomes or autosomal chromosomes
genome
sex chromosomes
clones
This pedigree represents the inheritance of hemophilia in this family. How many of the males have the hemophilia trait?
8
5
2
3
A blue flower is crossed with a red flower and you get a purple flower. Which pattern of inheritance is this?
Incomplete Dominance
Codominance
Multiple Alleles
Polygenic Inheritance
If both traits are fully and equally expressed, one trait is __________ to the other.
Dominant
Codominant
Incompletely Dominant
Recessive
If you have type O blood, what is your blood genotype?
Ai
Bi
OO
ii
What is epistasis?
When one gene controls the others
When one gene is recessive to the others
When one gene is codominant to another
When there are multiple alleles for one gene
If someone is a biological male, what are their sex chromosomes?
XX
XY
AB
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