WorksheetsSex linked
Total questions: 19
Worksheet time: 19mins
Colorblindness is a recessive X-linked disorder.
Which genotype represents a male with normal vision?
XN YN
Xn Yn
XN Y
Xn Y
What would the genotype be of a colorblind male?
XNY
XNYn
XnY
XnYn
In fruit flies, eye color is a sex-linked trait. Red (R) is dominant to white (r).
Which genotype shows a female fly with white eyes?
XRXr
XRXR
XrXr
Which genotype shows a male with white eyes?
R = Red, r= white
XrY
XRY
Which genotype represents a female who is a carrier for hemophilia?
XHXh
XhXh
XHXH
XhY
Who is more likely to have an X-linked trait?
Males
Females
Both males and females
Which gender has an X and a Y chromosome?
male
female
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
Colorblindness is a recessive X-linked disorder.
Which genotype represents a male with normal vision?
XN YN
Xn Yn
XN Y
Xn Y
The woman who is colorblind marries a man with normal vision. What is the probability that their sons will be colorblind?
0%
25%
50%
100%
Which genotype represents a female who is a carrier for hemophilia?
Which genotype represents a male with hemophilia?
Colorblindness is a sex-linked recessive trait. A colorblind woman marries a male with normal color vision. What is the percent chance of them having a color blind son?
0%
25%
50%
75%
What is 1 examples of an X-linked genetic disorder?
Huntington's Disease
Down's Syndrome
Colorblindness
Diabetes
A gene that is located on 1 of the first 44 chromosomes is called _____.
autosomal
x-linked
dominant
recessive
Which best explains why males cannot be carriers of X-linked traits?
Males only have one X chromosome
Males have two copies of the X chromosome
Males can be heterozygous for a particular trait
Males do not have an X chromosome
A woman who is a carrier for the sex-linked trait hemophilia has children with a man with hemophilia. What percentage of offspring would be expected to have hemophilia?
0%
25%
50%
75%
