Please enable JavaScript.
Coggle requires JavaScript to display documents.
Wong_Melinda_Block4_MM9 (Mendel's Experiment (F1 Generation (hybrids,…
Wong_Melinda_Block4_MM9
Mendel Law of Inheritance
Law of Segregation
Paired set of alleles for a gene will separate into 2 different gametes
Law of Assortment
alleles for different genes sort independently of each other
Exceptions
Unlinked genes always sort independently
linked only sort independently if there's a crossover
Codominance
Red x White = Red & White
Incomplete dominance
Red x White = Pink
Chromosome Disjunction
2n+1
2n-1
X-chromosome inactivation
looks like codominance
Mendel's Experiment
P Generation
true-breeders
parents of F1 cross
homozygous dominant or homozygous recessive
different phenotype
F1 Generation
hybrids
Shows dominant phenotype
One dominant allele and one recessive allele
Phenotype all dominant ratio 4:0 (monohybrid)
genotype ratio 0:4:0 (monohybrid)
Product of F1 cross
F2 Generation
offspring of F1 generation
3:1 ratio for phenotype (monohybrid)
1:2:1 ratio for genotype (monohybrid)
Product of F2 Cross
Dihybrid Cross
F2 Generation
Phenotype ratio 9:3:3:1
observing 2 genes
Test Cross
cross individual w/ dominant phenotype w/ individual w/ dominant recessive
if there are phenotype with recessive phenotype then parent is heterozygous
if there are no phenotype with recessive phenotype then parent is homozygous dominant
Probability Rules
Product Rule
p(A×B) = p(A) × p(B)
And
Sum Rule
p(A+B) = p(A) + p(B)
Or