Download Patterns of Heredity

Patterns of Heredity
Review
• What mode of inheritance
shows a blending of a trait?
–Incomplete
dominance
• What did Gregor Mendel use
to conduct his experiment?
–Garden peas
• Anything that can cause a
mutation?
–Mutagen
• Inheritance where more then
ONE gene controlling a trait
–Polygenetic
inheritance
• Abnormal number of
chromosomes
–Aneuploidy
• Body chromosomes; pairs 122
–Autosomes
• Failure of the homologous
chromosomes to separate
during meiosis
–Nondisjunction
• A chart where the
chromosomes are arranged in
their homologous pairs
–Karyotype
• An individual with the
genotype Ai for their blood
type would have what blood
type?
–A blood type
• Mutation that occurs when a
segment of a chromosome
breaks off and is reinserted
backwards
–Inversion
• Error in DNA that adds of
deletes a single base that
causes all the following amino
acids to be affected
–Frame shift
mutation
• The normal karyotype of a
human male would be…
–46, XY
•Give an example of a
genotype that would
represent a carrier
M
m
–X X
• When a chromosome breaks
off & joins another
chromosome, this mutation is
called
–Translocation
• What type of inheritance has
phenotypes of heterozygous
offspring showing BOTH
traits?
–Codominance
• What type of inheritance is
shown when the trait occurs
more frequently in one sex
than another?
–Sex-linked trait
• What type of inheritance is
exhibited when there are
more than 2 possible alleles
for a certain trait or
phenotype?
–Multiple alleles
• A mother who is heterozygous for
type A blood marries a man who is
homozygous for B blood. What are
the blood type of the children?
–50 % - B blood type
–50% - AB blood type
• In pedigrees, how are males
and females represented?
–Males – squares
–Females - circles
• What do the roman numerals
represent that are labeled on
a pedigree?
–Generation
numbers