ConnectingMeiosis to Genetics

Biology

How are meiosis & genetics related?

1. Meiosis produces gamete cells.

How are meiosis & genetics related?

2. diploid cells become haploid cells

How are meiosis & genetics related?

3. Gametes unite to form a zygote

How are meiosis & genetics related?

4. Zygotes grow into an organism containing: 50% of the genetic

information from mom 50% of the genetic

information from dad

How are meiosis & genetics related?

Genetics is the study of how the genetic information is inherited

A closer look at the genetic information

Trait: a physical characteristic Example

Brown hair Big ears

A closer look at the genetic information

Gene: section of a chromosome that codes for a trait

Example: Gene 1 codes for

your hair color Gene 2 codes for

your ear shape

A closer look at the genetic information

Alleles: different forms of a gene an organism receives two genes for each trait

The interaction of these alleles determines my phenotype

Analyzing Genetics

A Punnett square determines the probability an offspring will receive a specific trait