4th Q CQE Review Bio-Pedigrees And Karyotypes Question Preview (ID: 56502)


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How many total chromosomes are in a normal karyotype?
a) 46
b) 44
c) 23
d) 22

How many PAIRS of autosomes are there?
a) 46
b) 44
c) 22
d) 23

Chromosomes that don't determine sex are called
a) sex chromosomes
b) autosomes
c) heterosomes
d) useless

What percentage of sperm carry a Y chromosome?
a) 50%
b) 25%
c) 15%
d) 100%

Most sex-linked traits are found
a) On the Y chromosome
b) on the autosomes
c) On the X chromosome
d) in Alaska

What chromosomes generally determine if you are female?
a) XZ
b) Y
c) XY
d) XX

Why is colorblindness more common in males?
a) it is recessive and on the x chromosome
b) only fathers pass it on to their sons
c) it is located on the Y chromosome
d) males have 2 alleles for colorblindness

nondisjunction is when
a) You dance really, really, really bad
b) homologous chromosomes fail to separate
c) your sex chromosomes are XX
d) A female produces 2 eggs at a time

What is a gamete?
a) A sex cell
b) a body cell
c) a type of mouse
d) a sex chromosome

In a pedigree, a square represents
a) a marriage
b) a female
c) a male
d) siblings

What percentage of eggs contain an X chromosome?
a) 100%
b) 50%
c) 25%
d) 15%

What chromosomes generally determine if you are male?
a) XY
b) XX
c) X
d) XYZ

In a pedigree, a circle represents
a) a female
b) a male
c) a marriage
d) a divorce

if a circle or square is shaded, it means
a) the person doesn't have a disorder
b) the person has died
c) the person has the disorder
d) the person has had offspring

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