Chapter 3: Mendelian Genetics Flashcards
What are the seven visible features Mendel followed?
- seed shape
- seed color
- pod shape
- pod color
- flower color
- flower position
- stem height
Mendel’s system is known today as a
Model System
what is selfing?
self-fertilizing of individuals from the first generation
unit factors are known as
genes
an organism inherits ____ alleles for each trait
2
F1 ratio
3:1
F2 ratio
9:3:3:1
independent events occurring simultaneously, the combined probability of the two outcomes is equal to the product of their individual probabilities of occurrence describes…
the product law
Mendel’s ideal ratios are based on the probability events involving
segregation, independent assortment, random fertilization
When was Mendel’s work published?
in 1866
who discovered chromosomes in nuclei of salamander cells? when was it discovered?
Walter Flemming
in 1879
who initiated the chromosomal theory of inheritance?
sutton and boveri
define locus
location on chromosome where gene occurs
define sum law
probability of two events happening independent of one another but accomplished in more than 1 way (WW Ww wW)
Mendel’s four postulates are
- each allele is dominant or recessive
- segregation is unimpeded
- independent assortment occurs
- fertilization is random
