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

Two of the same alleles for a trait- one from mom and one from dad.

Homozygous 

100

A gene (allele) that will only show up if you get two (2) copies of it- one from each parents.

What is Recessive

100
How are traits passed from parent to offspring?
Through genes during reproduction
200
Where are genes located?
In the chromosomes
200

If tall plant (T) are dominant and short (t) is recessive, what genotype makes a short plants?

What is tt?

200

Two different alleles for a trait-one from mom and one from dad

Heterozygous 

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

A small section of DNA that acts like an instruction or recipe for making a trait.

Gene

300

The offspring of two heterozygous parents (Tt x Tt) has what probability of being short?

What is 25%

300

A simple chart scientists use to predict the possible traits (genotypes and phenotypes) that offspring might inherit from their parents.

A Punnett Square

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
The physical trait observed in an offspring is known as it's -
Phenotype
400
For some traits, only one copy of a particular gene is needed to show a given trait. These genes are referred to as-
Dominant
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

The sorting of chromosomes during sexual reproduction, determines -

Which traits are passed on to the offspring

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.
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