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WorksheetsMultiple alleles/Sex Linked Traits
Total questions: 20
Worksheet time: 22mins
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R X r ?
male with white eyes
female with red eyes
male with red eyes
female with white eyes
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R Y ?
male with white eyes
female with white eyes
male with red eyes
female with red eyes
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X r Y ?
male with red eyes
female with red eyes
male with white eyes
female with white eyes
H= normal blood clotting
h=hemophilia
XHXh x XHY
What is the probability that any of their offspring will have hemophilia?
4/4
3/4
2/4
1/4
If the offsprings have the blood groups O and A the genotype of parents would be
IAIA and IAi
IA i and ii
IAIA and IAIA
IA i and IBi
What are the blood types of the possible children that a woman (type O) and man (type AB) can have?
O and AB
O and A
O and B
A and B
There are multiple alleles for the ABO blood group. Why are only two of these alleles present in any one individual?
Each parent contributes only one allele for the ABO blood group to the offspring.
There are not enough nucleotides in a red blood cell to produce a third allele.
Each allele in the ABO group must be dominant or recessive
Blood group alleles are not segregated during meiosis.
A personal with type AB blood has which genotype?
type A
AA
IAIA
IAIB
A man with type O blood is accused of being the father of a type B baby. The mother is type A. Could this man be the father?
Yes
No
The physical appearance of an organisms is its
Genotype
Phenotype
characteristic
Heterozygous
A single gene has 3 or more alleles. These are called
multiple genes
multiple alleles
codominance
polygenic traits
AB blood type is an example of what type of inheritance? Both alleles show in the phenotype
complete dominance
incomplete dominance
codominance
polygenic inheritance
Write the GENOTYPE for a person who is homozygous for type B blood
(a)
How many recessive genes does a carrier female have for colorblindness?
1
2
0
Muscular dystrophy is a sex-linked recessive disorder. A man with muscular dystrophy marries a woman who doesn’t have this disease. Half of their daughters and half of their sons develop this disease. What is the genotype of the mother?
XNXN
XNXn
Xn
XN
