Show:
Genetics
Genotype
Phenotype
Punnet Squares
Misc
100
What is genetics?
The study of heredity.
100

What is the genetic constitution of an individual organism?

A Genotype

100

the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.

Phenotype

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 are genes located?
In the chromosomes
200

One of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.

Alleles

200

What affects an organism phenotype?

Nature and Nurture

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

Genotypes are denoted with letters that 

show dominant and recessive genes 

300

If brown hair is dominant to blonde hair, what phenotype would you see with a genotype of BB?

Brown hair.

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
Inherited traits that children get from their parents come from-
Genes
400

When an organism carries two copies of the same dominant allele

Homozygous Dominant

400

If big lips is dominant to small lips, what phenotype would you see with a genotype of ll?

Small lips

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

When an organism has two different alleles of a gene. 

Heterozygous

500

'A' is dominant for long arms, 'a' is recessive for short arms. If John is heterozygous, what phenotype does he have?

Long arms.

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.