MIDTERM 1 Flashcards
- Austrian monk
- Father of Genetics
- Performed breeding experiments w/ garden peas
- Found mathematical patterns of inheritance
Gregor Johann Mendel
scientific name of pea
Pisum sativum
His work was not appreciated until ____, ____ years after his death
1900…16
mendel died on___
1884
Mendel refuted “_______” of inheritance works without knowing anything about chromosomes or genes
blending theory
He figured that traits must be coded for by some kind of inheritable particle which he called “
———” and now “genes
factors
____were transmitted as independent entities from one generation to the next.
genes
Why did Mendel use peas?
Pea plant is self-fertilizing in nature but is easy to cross breed experimentally
Why did Mendel use peas?
The pea plant reproduces well and grows to maturity in a single season
The different hereditary characteristics are controlled by factors (genes) and that the factors occur in PAIRS
Law of Unit Characters
DEFINE:
Law of Unit Characters
The different hereditary characteristics are controlled by factors (genes)
When two unlike unit factors responsible for a single character are present in a single individual, one unit factor is dominanant to the other, which is said to be recessive
Law of Dominance or Recessiveness
DEFINE:
Law of Dominance or Recessiveness
When 2 unlike unit factors responsible for a single character are present in a single individual, one unit factor is dominanant to the other, which is said to be recessive
During the formation of gametes, the paired unit factors separated or segregate randomly so that each gamete receives one or the other with equal likelihood.
Law of Segregation
DEFINE:
Law of Segregation
During the formation of gametes, the paired unit factors separated or segregate randomly so that each gamete receives one or the other with equal likelihood.
