1616719
Patterns of Inheritance
- Mendel's Laws
- The segregation of traits
- Random
alignment of
tetrads during
metaphase I
- Random
alignment of
tetrads during
metaphase I
- There is a gene that is carried
on a chromosome and in a
diploid chromosome there is
another homologous
chromosome that has
essentially the same DNA
with the same gene for the
same trait, but they can have
slight differences (at the same
locus) that has different
ALLELES.
- The segregation of traits
- Deviations from Mendel's Laws
- Some traits not on
nuclear chromosomes
(e.g. mitochondrial or
chloroplast chrosomes)
- Traits on the same chromosome
- Traits carried on
sex-chromosomes
(e.g mammals XX
female, XY male)
- Some traits not on
nuclear chromosomes
(e.g. mitochondrial or
chloroplast chrosomes)
- 1859 Charles Darwin
- Published "The Origin of Species"
- Published "The Origin of Species"
- The Garden Pea
- True-breeding varities: a
particular trait was
consistently inherited
from one generation to
the next
- Easy to grow
- Easily distinguishable
traits (flower color,
round or wrinkled,
pod color)
- 2 types of fertilization
- Cross mate- use
a brush to put
pollen on ovar of
another plant
- Self-fertilization: take
pollen and fertilize
ovar of same plant
- Cross mate- use
a brush to put
pollen on ovar of
another plant
- True-breeding varities: a
particular trait was
consistently inherited
from one generation to
the next
- Incomplete dominance
- 1:2:1, 1 gene 2 variants
- 1:2:1, 1 gene 2 variants
- Lethal alleles: FF = dead, ratio is 2:1 not 3:1
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