Download Mendel`s Discoveries

ANSWERS - Mendel’s Discoveries -OMM pg. 226
Read the “Mendel’s Discoveries” notes and complete the sentences.
1. Gregor Mendel did experiments with pea plants and learned that
THE MALE AND FEMALE PEA PLANT EACH CONTRIBUTED
SOMETHING DURING FERTILIZATION AND THOSE SOMETHINGS
HAD TO BE IN PAIRS…TRAITS WERE DETERMINED BY A PAIR OF
GENES – ONE GENE FROM THE MALE AND ONE FROM THE FEMALE.
2. Mendel is called the “Father of Genetics” because
HE WAS ONE OF THE FIRST PEOPLE TO GATHER INFORMATION
AND DETECT A PATTERN ABOUT THE PASSING ON OF TRAITS
FROM ONE GENERATION TO THE NEXT – THE FUNDAMENTAL
PRINCIPLES OF HEREDITY!
3. Mendel used pea plant for two reasons:
a. THEY HAVE MANY EASILY,OBSERVABLE TRAITS; PLANTS ARE
SIMPLE COMPARED TO HUMANS
b. THEY REPRODUCE QUICKLY; THEY CAN BE CONTROLLED IN THE
FERTILIZATION PROCESS; MULTIPLE OFFSPRING OPPOSED TO
USUALLY JUST ONE
4. Mendel thought that tall plants + small plants = MEDIUM plants. He
was surprised because the tall plants + small plants made TALL plants.
5. Mendel concluded that
IF A DOMINANT TRAIT IS GOING TO BE EXPRESSED(SHOWN),
THEN AT LEAST ONE DOMINANT GENE (ALLELE) MUST BE
PRESENT . ALSO THAT TRAITS WERE DETERMINED BY A PAIR OF
GENES – ONE GENE FROM THE MALE AND ONE FROM THE FEMALE.