principles of inheritance part 1 Flashcards
1
Q
for how long Mendel conducted his experiments
A
he conducted exp. on garden peas for 7 years( 1856-1863)
2
Q
what are the names of three laws of inheritance
A
- law of dominance
- law of segregation and
- law of independent assortment
3
Q
law of dominance
A
TT homozygous dominant (tall) Tt heterozygous (tall) tt homozygous recessive (dwarf)
4
Q
law of segregation
A
even though the parents have two allleles, during gametogenesis the alleles segregate such that the gametes receives only one of the two factors
5
Q
monohybrid cross
A
a cross between organisms who differ in only 1 character
all f1 plants have tall stem
6
Q
f2 generation ratios(monohybrid )
A
genotypic ratio : 3:1
phenotypic ratio: 1:2:1
7
Q
Test cross tt x TT
A
100% tall
8
Q
test cross Tt x tt
A
50% tall, 50% dwarf
9
Q
understanding test cross
A
An unknown genotype ( TT or Tt) is crossed with a homozygous recessive individual
