Please enable JavaScript.
Coggle requires JavaScript to display documents.
Mendel and gene idea (P1 generations (F1 generation (F2 (offspring of F1,…
Mendel and gene idea
P1 generations
homozygous
two identical alleles
for a given gene
having
F1 generation
1st heterozygous
having
2 different alleles
for given gene
offspring of P1
crossing of P1
F2
offspring of F1
crossing of F1
or self pollination
Ex:
Ex: =True breed purple flowers + True breed white flowers
true breeders
Ex: flowers that have self pollinated over many generations
Hybridization
dihybrid cross
F1+F1
2 characters
heterozygous
Ex: YyRr+YyRr
monohybrid cross
F1+F1
one character
heterozygous
Ex: Pp+Pp
Mendel laws
third
2 alleles
that differ
dominant
recessive
fourth
"LAW OF SEGREGATION"
2 alleles
separate in gamete formation
Second
each character
2 alleles
1 from mom
one from dad
First
alternate gene versions
variations
characteristics
complex gene variation
Dominance
Complete dominance
Incomplete dominance
Codominance
Example
Mendels pea plants
flower color
purple vs white
Pleiotropy
ability single gene
multiple effects
Multiple alleles
more than 2 allelic forms
genes exist
example
Blood Type
I^B
i
I^A
Epistasis
gene interaction
one gene alters expression of another