Inheritance patterns Flashcards
Blending theory
offspring phenotypes are a blend of the parental traits
Gregor Mendel
developed the particulate theory of inheritance
- traits are inherited as “particles”, with offspring receiving a particle from each parent
Mendel’s Laws- segregation
The law of segregation: the two copies of a gene separate during gamete formation. each gamete receives only one copy
punnett square- 3:1 ratio
monohybrid crosses
Homozygous
two alleles that are the same
Heterozygous
Two different alleles
dominant alleles
always expressed
Recessive alleles
mag be mutated and no longer expressed, or encoded non-functional proteins
Mendel’s Law - independent assortment
the law of independent segregation: Copies of different genes assort independently
why was Mendel successful
large sample sizes- by counting many many progeny, he was able to see clear patterns
