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Organization
Heredity
This vs. That
Punnet Squares
Misc
100

The term for a form of gene.

Allele

100
What is heredity?
The passage of genetic instructions (traits) from parent to offspring.
100
Inherited vs Acquired
Inherited - Traits passed down genetically from your parents Acquired - Learned or obtained during life
100
Some genes can be hidden or covered up by another. These are considered to be-
Recessive
100
How are traits passed from parent to offspring?
Through genes during reproduction
200

Where do an organisms genes come from?

Both parents

200
Who first studied heredity and the passage of traits from one generation to the next?
Gregor Mendel
200
Dominant vs. Recessive
Dominant - Represented by a capital letter, will be expressed in a hybrid Recessive- Represented by a lower case, needs two copies to be expressed
200
What is the punnet square used for?
To determine the outcome of genetic crossings.
200
Name two traits that could be inherited from a parent?
Examples: hair color, eye color, height, skin color, freckles, etc...
300
What are the threadlike structures of DNA that carry genes called?
Chromosomes
300
What type of organism did Gregor Mendel use to first study heredity?
Pea Plants
300
Hybrid vs. Purebred
Hybrid- A copy of a dominant and recessive allele (Aa) Purebred- Two copies of the same allele (AA or aa)
300
A black chicken (BB) is crossed with a black chicken (BB). What percentage of offspring will be black?
100%
300
Why does a Punnet Square use capital and lowercase letters?
Capital = Dominant Trait Lower Case = Recessive Trait
400

Which is a homozygous dominant genotype?

ff, FF, Ff, 

FF

400
The physical trait observed in an offspring is known as it's -
Phenotype
400
Genotype vs. Phenotype
Genotype- The genetic makeup of an individual Phenotype- The physical trait expressed in an individual
400
Having dimples is dominant (D). Not having dimples is recessive. (d) Both parents are heterozygous for the dominant trait. What percentage of the children will NOT have dimples?
25%
400
How many parents are involved in asexual reproduction?
One
500
What do we call the genetic make up of the individual, represented by a set of letters?
Genotype
500
How many chromomsomes do humans have?
46 or 23 pair
500

Mendel vs. Punnett

Mendel crossed Pea Plants and was known as the "father of genetics", and Punnett created the Punnett squares to predict the percent of offspring that carry a specific trait.
500
Long ears are dominant (E) in rabbits. If one parent is homozygous dominant for the long ear trait and the other homozygours reccessive (e), what is the only possible genotype of the offspring?
Ee
500
Two dark brown rabbits have four offspring. Three of the offspring are dark and one is white. What does this tell you about the parents' genes for fur color?
Dark brown is dominant and white fur is recessive. Both parents are heterozygous.