Intro: Genetics and Breeding

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 I will show an “awkward” family photo.
 You tell me what is the inherited trait….
 But you will be on teams and the first team to raise
their hand will get to say the answer..
 What is the PRIZE…….
 Self-gratification for beating the other team.
Blond Hair, dark eyes, and light skin.
Dark hair, dark eyes, light skin, square chin.
Wavy hair, moms and daughter’s smile look
alike.
Blue eyes, mom’s and older sons chin, dad’s and
older son’s ears.
Men's body type.
Hair color mostly looks like red-strawberry
blonde. (Great dresses!!!)
Mom and daughter’s hair color, dad
and son’s hair color (and style).
 Define key terms over genetics and breeding with 80%
accuracy.
 Discuss Gregor Mendel and his contributions to
genetics with 80% accuracy.
 Create a Punnett square detailing different color
characteristics on a pea plant similar to Gregor
Mendel’s experiment.
 Why should we know about genetics?
 Why is Gregor Mendel important to genetics?
 Why is it important to understand how punnet
squares work?
 What are the terms for this unit?
 Who is Gregor Mendel?
 What is a punnet square?
 How does a punnet square work?
 Cell: The basic unit of life
 Chromosome: A strand of genetic material that contains
genetic code
 Crossbreeding: The breeding of two different pure
breeds
 Gene: A unit of inheritance composed of DNA
 Genetics: the study of heredity
 Heredity: the passing of traits from parents to offspring
 Genotype: Genetic makeup of an animal
 Phenotype: The outward expression of a gene
 Purebred breeding: The breeding of animals within the




same breed
Reproduction: The process by which new organisms are
derived normally involving the union of the male and
female sex cells.
Alleles: alternative form of a gene (one member of a pair)
that is located at a specific position on a specific
chromosome
Heterozygous: The two genes are different. Ex, Rr
Homozygous: Both genes are the same. Ex, RR
 In 1866 Gregor Mendel discovered principles of inheritance
while working with garden pea plants.
 He noticed inheritance through selective cross-breeding of
different colored pea plants.
 He also noticed certain traits show up in offspring without
any blending of parent characteristics.
 Why did he choose garden pea plants?
 Used the garden pea plants because they grow easily, and
abundantly, and are easy to manipulate.
 Technique for predicting genotype of potential offspring.
 It considers the dominant and recessive genes of the male
and female parents for one trait.
 Homozygous and heterozygous genes are considered.
 This is an example of how
to predict the probability
of having a wrinkled
seeded offspring.
 Both parents are
heterozygous with the
recessive gene being
wrinkled.
 What is genetics and heredity?
 Who was Gregor Mendal and what was his
contribution to genetics?
 What is a punnett square?
 How does a punnett square work?
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