Stromes Need To Know Exam Terms Flashcards
Mating
Making a cross
Dihybrid
HETEROZYGOUS
Non-disjunction
Look out for Meiosis 1 or Meiosis 2
Homologous
Means 2 affected
Testcross
Homozygous
When drawing chromosomes
Meiotic -> Meiosis
Miotic -> Mitosis
Dihybrid
HETEROZYGOUS
9:3:3:1
Epistasis
9:4:3
Incomplete Dominance
1:2:1
GENOTYPE
Genetically identical
A/A
PHENOTYPE
Physically similar
HAPLO-insufficient
One is NOT enough!
T/t
Haplosufficient
T/T
Cell CHROMOSOMES
A/a;B/b
NORMAL Meiosis 1
A;B. A;b
A;B. A;b
a;b. Or. a;B
a;b. a;B
*these are all the possible gametes
Non-disjunction Meiosis 1
A/a;b. A/a;B
A/a;b. A/a;B
;B. Or. ;b
;B. ;b
*these are all the possible GAMETES
Non-disjunction in Meiosis 2
A/A;B. A/A;b
;B. ;b
a;b. Or A;B
a;b. A;B
- these are all the possible GAMETES
- M2 -> 2 are GOOD and 2 are BAD
Complementation test
a/a x b/b
A/a;B/b x A/a;B/b
9 purple
7 white
*complementation is when you mate HOMOZYGOUS RECESSIVE with HOMOZYGOUS RECESSIVE
(+)
- Compliments
- DIFFERENT gene
(-)
- Fails to compliment
- Same gene
F2 PHENOTYPE
9:3:4
F1 (Incomplete Dominance)
1:2:1
Probability
Means to multiply
And
Multiply
Or
Add
