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Genetics PowerPoint Notes
1.) What is the simplified definition of ‘genetics’?
Genetics is …
2.) What is heredity?
Heredity is …
Ex:
3.) Mitosis is ____________ reproduction that results in __ cells. (_________).
This is important for ___________, ___________, & ___________________.
4.) Meiosis is used only for ____________ reproduction. This process produces
____________________ cells! Important in making what? __________________
5.) Describe DNA’s “home” based on the PP picture that is displayed.
6.) DNA contains the ___________ material for the ________ organism!
It is passed on from ______________ to generation and from cell to _______. Based on
this information, why do some of us have characteristics of our grandparents, aunts, uncles,
cousins, etc….?
7.) Once upon a time, there lived an ________________ monk named ____________
______________. He worked in the monastery’s garden, paying special attention to
______ _______________. He studied how ____________ _____________ were
passed from generation to generation. He did wonderful things in Genetics, and that is
why he is called the “_______________ of _________________!”
8.) Mendel _______________ - pollinated pea plants, which means: ________________
the male pollen grains are ____________________ to the female and the _________ is
fertilized!
9.) Mendel observed many different traits that showed up in his pea plants. What is a trait?
An ___________________ inherited characteristic contain at least _______ pair of
genes
10.) How many observed traits did Mendel use in his studies of pea plants? ________.
11.) Terms and abbreviations:
Monohybrids = hybrid for ____ trait
P = ________________ generation.
F1= ________________________ generation. (_____________________).
F2= ________________________ generation. (_____________________).
F3= ________________________ generation. (_____________________).
Dihybrid = organism hybrid for ____ traits
12.) Homozygous – ________ is defined as __________________________________
___________________________________________________________________.
13.) Heterozygous – _______________ is defined as __________________________
____________________________________________________________________.
14.) When Mendel crossed 1 of his “ ______________________” the next generation
showed: 3 tall: 1 short pea plant (ratio)
How did that happen?
Tt x Tt
We now use “ ____________________” to help us predict what the offspring may look
like.
15.) Mendel concluded from his experiments that each ____________ has ___ factors for
EACH _________________! We now call them _________ which are found on
__________________.
16.) ___________- are different gene forms for a _________ of an organism.
Ex: there are ___ alleles for blood-type, but a person only inherits ____ ___________
for each blood type.
17.) A parent can only pass on ___ gene from each pair
18.) _______________ genes are “stronger” than ______________ genes (weaker).
19.) _______________ genes only require ___ allele for a trait to be present.
Ex: _______ or ________
20.) Recessive genes require ____ alleles for a trait to be present. Ex= _______
21.) The genotype refers to the ____________ which represent the genes. Ex:
Who are the only people to have exactly the same genotypes for each trait?
22.) The ______________ refers to the ______________appearance of the gene pair.
Ex: ______________________________________________________
23.) Complete Dominance states: Dominant gene is _______________ (B) than the
______________ recessive gene (b). When together, the dominant gene expresses the
________________ (recessive gene trait is “hidden”). Ex: Bb
24.) ______________ _________________ states that when ___ alleles are ___________
in strength, there is a ________________ of their phenotypes.
Ex:
__________________+ _________________= ______________.
25.) ___________________ states that _______ phenotypes will show up together.
Ex:
26.) How do we use genetics in our lives?
1.) _______________________________
2.) _______________________________
3.) _______________________________
4.) _______________________________
5.) _______________________________
CROSSES:
Brown hair is dominant over blonde hair. Show a cross for a heterozygous brown haired man
with a blond woman. Display the F1 generation.
Genotypes:
Brown =
Blonde =
Genotypes of F1 generation:
Genotypic ratio:
Phenotypes of F1 generation:
Phenotypic ratio: