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Autosomal
Inheritance
Recessive
And stuff
disorders
Autosomal
Dominant
& co-dominant
Sex-linked
Chromosome
#’s
testing
100
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200
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100
How many chromosomes are pictured
in a karyotype of a human diploid
body cell
46
200
All the other chromosomes that aren’t the
sex chromosomes
autosomes
300
Daily Double
Because both the A and B allele are
expressed in the AB blood type, it has this
form of inheritance
codominance
400
AC Bio
A mother has blood type AB, the
father is also blood type AB, what
could be the possible blood types of
their children
AC BIO
A, AB, or B
500
A child is Rh+ having the alleles, (+) (+)
give all the possible Rh genotypes of
people who could donate blood
++, + - , - -
100
Affects Jews
Tay Sachs
200
Parents do not have the disorder, but
their child does, give the genotypes of
the parents and give the term that
describes the parents genotype
Heterozygous or carriers
300
This disorder results in thick mucus
that clogs the lungs and other organs
Cystic fibrosis
400
What is the percent chance that two
parents who are carriers for a
recessive disorder will produce a
homozygous normal child
25%
500
A homozygous normal male marries
a female who has PKU. She is
worried about passing this trait onto
her children. Does she have to worry
about this, explain.
AA x aa
No, she doesn’t have to worry.
Her husband is homozygous
normal, he will always give a
dominant allele and PKU is
recessively inherited so no child
could have the disorder
Aa
100
How many dominant alleles must a
person inherit to have an autosomal
dominant disorder
one
200
How is an autosomal dominant disorder
different from a sex – linked disorder?
Autosomal dominant affects
autosomes. Sex-linked disorders
are associated with the sex
chromosomes (mainly x)
300
Autosomal dominant disorder that is
fatal. Symptoms do not appear until
person is in their 30’s or 40’s
Huntington’s disease
400
a person suffers from achondroplasia
disorder what is their genotype and
what is the chance of them passing it
on to their offspring
Aa
50%
500
Autosomal Dominant
Give the phenotypes
Genotypes
Phenotype
Aa
a.
aa
b.
AA
c.
a.Disorder
b. normal
c. dead
100
Why do women show fewer sex linked
disorders?
They have 2 X chromosomes and
can mask a recessive disorder if
they have a dominant allele on
the other.
200
Disorder in which blood fails to clot
properly
hemophilia
300
Who do males inherit their sex-linked
disorders from? Explain
Mother, they give the x
chromosome. Dad gives y and
nothing on that.
400
Which parental pair could produce females
with colorblindness?
A - Homozygous normal-vision mother,
father with colorblindness
B - Mother with colorblindness, normal –
vision father
C - Heterozygous normal vision mother,
father with colorblindness
C
500 – Daily double
Assume this chart shows
a sex linked recessive
disorder:
Row 2
Row 3
What would be the
genotype of the
daughters in the second
row?
What is the sex of the
person who has the
disorder in the third
row? Give their
genotype.
XAXa (allele from dad who has
the disorder and normal from
mom) son (male) is XaY
100
Failure of chromosomes to separate
Non-disjunction
200
XXXY
Klinfelters
300
Honors Both
missing part of chromosome #5.
Children have a cry like a cat.
AC Bio - All humans must be born
with at least one of these
chromosomes
X
Honors – Cru du chat
400 – daily double
Which process resulted in the
disorder shown below?
amniocentesis
500
Give the name of the
disorder shown here.
A doctor would make one of
these, shown above to test for
genetic disorders.
Trisomy – 21
Down Syndrome
Karyotype