Genetics
Heredity
Punnet Squares
Misc
Review
100
What is genetics?
The study of heredity.
100
What is heredity?
The passage of genetic instructions (traits) from parent to offspring.
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
100

True or false: Plants do respiration.

True!

200
Where are genes located?
In the chromosomes
200
Who first studied heredity and the passage of traits from one generation to the next?
Gregor Mendel
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...
200

DNA is stored here in a cell.

Nucleus

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
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
300

These little organelles make proteins.

Ribosomes

400
Inherited traits that children get from their parents come from-
Genes
400
The physical trait observed in an offspring is known as it's -
Phenotype
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
400

Living things need to maintain this (it means "same state")

Homeostasis

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
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.
500

All energy for life on earth comes from this.

THE SUN!

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