WorksheetsSEX-LINKED,LIMITED and INFLUENCED TRAITS
Total questions: 20
Worksheet time: 10mins
The sex influenced traits are present in _______________________
A. Autosome
B. Sex chromosome
C. Mitochondrial chromosome
D. These are epigenetic traits.
Sex influenced traits are only related to females.
true
false
If A is sex influenced trait that is more expressed in males, then which of the following is false?
A. Only male having a homozygous recessive form of this gene will not express it
·
B. No female will express the gene
·
C. The gene is autosomal
·
D. Heterozygous female will not express this gene
If present of horn in a breed of sheep is due to the presence of h+ allele which is sex influenced and more expressed in male, choose the off one out.
A. Female with h+ h+
B. Male with h+ h+
·
C. Female with h h+
·
D. Male with h h+
Patterned baldness is a sex influenced trait more expressed in a male. If B is normal allele making non-bald phenotype and b is mutant leading to bald phenotype, for a cross between a bald mother and normal father, what is the probability of a bald son?
A. 0
B. 1/4
C. 1/2
D. 1
Homozygous bald gene, a sex influenced gene, is equally expressed in men and women.
TRUE
FALSE
A person who is heterozygous for a recessive allele of a trait is called____.
a. Host
b. Carrier
c. Unaffected
d. Affected
The name of a group of hereditary genetic diseases that affect the body's ability to control blood clotting; characterized by a lack of clotting factors in the blood.
a. Huntington’s disease
b. Sickle cell anemia
c. Hemophilia
d. Morgan’s disorder
located on a sex chromosome; usually refers to the X-chromosome (sometimes Y)
a. SEX-limited
b. SEX-inheritance
c. SEX-linked traits
d. SEX- influenced traits
traits that are expressed in only one sex.
a. SEX-limited
b. SEX-inheritance
c. SEX-linked traits
d. SEX- influenced traits
an autosomal trait that is influenced by the presence of male or female sex hormones; dominant in one and recessive in the other.
a. SEX-limited
b. SEX-inheritance
c. SEX-linked traits
d. SEX- influenced traits
Humans have ___________ chromosomes (total) inside all somatic cells, arranged in ___________ pairs.
23; 46
46; 23
22; 44
44; 22
_______________ are chromosomes that do NOT determine the sex (gender) of the individual.
Autosomes
Gametes
Alleles
X & Y
An individual is considered genetically female if their genotype is _________________.
XX
XY
XYY
YY
Hemophilia is an X-linked (sex-linked) recessive trait. If a normal male (XHY) and a carrier female (XHXh) have children, what percentage could inherit the disorder?
0%
25%
50%
75%
Colorblindness is an X-linked (sex-linked) recessive trait. What are the chances that a colorblind male and a carrier female will have colorblind children?
25%
50%
75%
100%
Sex-linked traits are more likely to appear in males than in females because (choose one):
the traits are linked to X-chromosomes, which are not present in females.
the traits are linked to X-chromosomes, which males have only one copy of.
the traits are linked to Y-chromosomes, which are not present in females.
the traits are linked to Y-chromosomes which males have only one copy of.
An individual is considered genetically male if their genotype is __________________.
XX
XY
XXY
YY
Humans have ___________ chromosomes inside all sex cells (sperm and egg cells).
46
11.5
23
2
Which of the following genotypes belongs in the red box in the Punnett square?
XBXB
XbXb
XbY
XBY
