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Genetics 1
Genetics 2
Genetics 3
Genetics 4
Genetics 5
100
How many dominant alleles are needed for a particular trait to show up?
1
100

Big teeth (T) is dominant over small teeth (t). What is a possible genotype for big teeth?

TT or Tt.

100

If a snake has 36 chromosomes in it's body cells, how many chromosomes did it inherit from the father snake?

18

100

Is RR considered homozygous or heterozygous genotype?

Homozygous

100

How is a dominate allele expressed in a genotype?

By a capital letter 

200

What is heterozygous?

One dominant allele one recessive allele

200

Where is our chromosome located?

inside of the nucleus

200
What are the genotypes for males?

XY

200
This is an organism's genetic makeup.
Genotype
200
This is an organism's physical appearance.
Phenotype
300

If yellow (Y) if dominant over blue (y), what is the phenotype for the genotype yy?

Blue

300
An organism with 2 different alleles for a trait is called a ______.
Hybrid/heterozygous
300
This shows all of the possible outcomes of a genetic cross.
Punnett square
300
This type of organism has 2 different alleles for a trait
Heterozygous
300
What happens when a recessive allele is paired up with a dominant allele?
It is hidden / doesn't show up
400

What is a genotype?

The genetic makeup of an organism.

400

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

Homozygous dominant

400

Do the following cross (A = freckles, a = no freckles):

Aa x Aa

What are the possible genotypes?

Phenotypes?

AA, Aa, aa

75% Freckles

25% No Freckles

400

Would Tt be considered as a homozygous or heterozygous genotype? Why?

Heterozygous because it has one dominant and one recessive allele

400
This type of organism has 2 recessive alleles for a trait
Homozygous recessive
500
This is the passing of physical characteristics from parent to offspring.
Heredity
500
This was the scientist who first began studying heredity and genetics.
Gregor Mendel
500

A section of DNA is called

a gene

500

This is the study of heredity

Genetics

500
Do the following cross where B = blue eyes, b = brown eyes.


Bb x bb

Genotype?

Phenotype?

Bb, bb

50% Blue Eyes

50% Brown Eyes