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vocabulary
inheritance
Punnet Squares
Random
Natural Selection
100
This is an organism's physical appearance.
Phenotype
100
What happens when a recessive allele is paired up with a dominant allele?
It is hidden / doesn't show up
100

How many possible offspring are shown in a punnet square? 

4 possibilities 

100
What is another word for purebred?
homozygous
100

Natural Selection is also known as ________

Survival of the fittest

200
This is an organism's genetic makeup.
Genotype
200
How many dominant alleles are needed for a particular trait to show up?
1
200
This shows all of the possible outcomes of a genetic cross.
Punnett square
200
This was the scientist who first began studying heredity and genetics.
Gregor Mendel
200

Natural Selection can be defined as ____________

The process in which organisms with desirable traits are able to pass down those traits to the next generation. These traits help them to survive and reproduce. 

300
Different forms of a gene.
alleles
300
This is the passing of physical characteristics from parent to offspring.
Heredity
300

This type of organism has 2 recessive alleles for a trait (aa

Homozygous recessive

300
An organism with 2 different alleles for a trait is called a ______.
Hybrid/heterozygous
300

What is needed for natural selection to occur?

Inherited variations

400
This is the study of heredity
genetics
400
Factors that control traits are called.....
Genes
400

This type of organism has 2 dominant alleles for a trait. (AA)

Homozygous dominant

400
TT and tt are both examples of a ___________ trait.
purebred/homozygous
400

Humans selected cows that are good for milk production and only bred those types of cattle. Over many generations, the resulting cows produced a lot of milk. This is an example of _______________

Artificial Selection

500
What is another word for heterozygous?
hybrid
500

A mistake in the copying of DNA is called a __________

mutation

500
This is a number that describes how likely it is that an event will occur.
Probability
500

This type of organism has 2 different alleles for a trait (Aa)

Heterozygous

500

Only traits controlled by genes can be acted upon by natural selection? True or False

TRUE