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7th Science Sect 5.1
Notes
36
Science
7th Grade
10/20/2010

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Cards

Term
What is the passing of traits from parents to offspring?
Definition
Heredity
Term
Who used plants to study the way traits are passed from parents to offspring?
Definition
George Mendel
Term
When and where was George Mendel born?
Definition
In 1822 in Austria
Term
What kind of plants was George Mendel famous for using for experiments?
Definition
Garden Pea plants
Term
Why did George Mendel use pea plants?
Definition
They grow quickly, are self-pollinating and have many varieties
Term
What is the male part of a plant?
Definition
Anther
Term
What is the female part of a plant?
Definition
Stigma
Term
What is it called when pollen from one flower can fertilize the eggs of the same flower or another flower on the same plant?
Definition
Self-pollination
Term
How many characteristics did Mendel chose to study at a time?
Definition
One
Term
What kind plants will always produce offspring with the same trait as that of the parents?
Definition
True-breeding plants
Term
What is it called when you cross 2 plants that have a different form of a single trait?
Definition
Cross-pollination
Term
What kind of trait is always visible?
Definition
Dominate trait
Term
What kind of trait is not visible?
Definition
Recessive trait
Term
What did Mendel’s first experiment do?
Definition
He crossed 2 character traits
Term
What did Mendel’s do for his second experiment?
Definition
He allowed the first generation to self-pollinate
Term
What happened to Mendel’s second experiment?
Definition
The recessive trait reappeared
Term
How did Mendel get an accurate finding?
Definition
He used a very large number of plants
Term
What carries the entire hereditary trait?
Definition
Genes
Term
Where are the Genes located?
Definition
Where are the Genes located?
Term
What are 2 forms of genes called?
Definition
Alleles
Term
What did Mendel realize he could explain about each plant?
Definition
That is had 2 sets of instructions or genes
Term
What is a chart used to visualize all of the possible combinations of alleles from the parents?
Definition
Punnett Square
Term
How are dominant alleles symbolized?
Definition
Capital letter
Term
How are recessive alleles symbolized?
Definition
Lower case letters
Term
What is the inherited combination of alleles called?
Definition
Genotype
Term
What is the physical appearance of an organism called?
Definition
Phenotype
Term
In Mendel’s second experiment, what was the ratio of the dominant and recessive traits?
Definition
3:1
Term
Was the 3:1 ratio of Mendel’s experiment the same as he calculated from his data?
Definition
yes
Term
What is important to realize about offspring and their parents?
Definition
It is equally likely to inherit either alleles from either parent
Term
What is the mathematical chance that an event will happen called?
Definition
Probability
Term
How do we normally express probability?
Definition
Fraction, percent or ratio form
Term
How do you express probability as a percentage?
Definition
Divide the numerator by the denominator and then multiply by 100
Term
How many years after Mendel published his findings did the science community notice him?
Definition
30 years.
Term
What door did Mendel open?
Definition
Modern genetics
Term
What door did Mendel open?
Definition
Modern genetics
Term

Know the parts of a flower:

Stigma

Anther

Petal

Ovary

Ovule

Definition
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