WorksheetsSex-linked Traits
Total questions: 10
Worksheet time: 11mins
Name
Class
Date
1.
The sex of a child is determined by
a)
whether the father's sperm contains an x or y chromosome
b)
whether the mother's egg contains an x or y chromosome
c)
the age of the parents
2.
An individual's sex is determined by
a)
1 of 23 chromosomes
b)
2 of 46 chromosomes
c)
4 of 92 chromosomes
3.
The visual representation of an individual's chromosomes is a
a)
phenotype
b)
genotype
c)
karyotype
d)
stereotype
4.
Why is the gene for a disease or disorder more likely to be found on the X chromosome than Y?
a)
The X chromosome has many more genes
b)
The Y chromosome has many more genes
5.
Males are more likely to suffer from a sex-linked disease or disorder because
a)
males are the weaker sex
b)
males have less DNA
c)
males have 1 X chromosome, so the disorder is more likely to be expressed
6.
When we say that a woman is a carrier for a genetic disease or disorder it means that
a)
she has 1 gene, but not the disorder
b)
she has 2 genes for the disorder
c)
she can pass the gene only to male children
d)
she can pass the gene only to female children
7.
Why are men 16 times more likely to be color-blind than women?
a)
to be color-blind, you must have a Y chromosome
b)
to be color-blind, all of your X chromosomes must have the gene
c)
color-blindness is caused by testosterone
d)
color-blindness is caused by the same gene as baldness
8.
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be
a)
sex-linked trait
b)
polygenic trait
c)
codominant trait
d)
incomplete dominance trait
9.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
Which genotype represents a female who is a carrier for hemophilia?
a)
XHXh
b)
XhXh
c)
XHXH
d)
XhY
10.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
100 %
