Lesson 3.1 Quiz Flashcards
Each different form of a characteristic
Trait
Scientific study of heredity
Genetics
He is know as the father of genetics, started a study of heredity using pea plants
Gregor Mendel
Joining of sperm and egg to form a new organism
Fertilization
This is found in the pollen of the stamen
Sperm
This is found in the pistils
Egg
Moving pollen from stamen to pistil is called
Pollination
Pollen from one plant moves to the pistol of another is called
Cross pollination
Pollen moves from the stamen to the pistol of the same plant
Self pollination
Offspring of many generations with the same trait
Ex TT or tt
Pure bread
What generation was the original parents?
P generation
What is the first filial- offspring produced by P generation
F1 generation
Second offspring, offspring of F1 generation
F2 generation
Shows up when present, written with capital letters.
TT or Tt
Dominant trait
Hidden trait when dominant allele is present; written with a lower case
Example: tt
Recessive
Two different alleles for a trait
Example: Tt
Hybrid
Factor that can control a trait
Gene
Different form of a gene ( on of the pair)
Allele
True or false
Factors occur in pairs
True
How many factors does the mother and father contribute?
1 factor each
Can one factor mask another?
Yes
Organisms traits are controlled by —– inherited from parents, one from each parent
Allele
In all of Mendel’s crosses how many forms of the trait appeared in the F1 generation?
1
It what generation did the “lost” form of the trait appear again?
What percent was shown
In the F2 generation
25%
Mendel started his experiments with traits that were the same or opposite?
Opposite
The passing of physical characteristics from parents to offspring
Heredity
