Friday, January 12, 2024 - Intro to Traits
trait | allele | letter |
|---|---|---|
height | tall short | T - dominant t - recessive |
hair color | brown blonde | B - dominant b - recessive |
eye color | brown blue | B - dominant b - recessive |
hair type | curly straight | H - dominant h - recessive |
father of genetics
scientist in the 1800s
studied traits in the garden pea plant while living at a monestary
used 28,000 pea plants to record his data
data was able to support 3 laws of genetics
mendel’s laws
Mendel’s Law of Dominance
dominants traits are expressed if it is present
Mendel’s Law of Segregation
allels are seperated during meiosis
each gamete recieves one allele of a trait
Mendel’s Law of Independent Assortment
the traits are seperated independently of all other traits in the organism
heterozygous genes are genes that:
have 2 different allels for one gene
also called “hybrid”
example; Aa
homozygous genes are genes that
have 2 of the same allele for one gene
also called “pure bred”
example; AA or aa
the genetic makeup of an individual
represented by letters for each allele
the observable characteristics of an individual organism
what the offspring looks like
possible outcomes of traits for offspring
trait | allele | letter |
|---|---|---|
height | tall short | T - dominant t - recessive |
hair color | brown blonde | B - dominant b - recessive |
eye color | brown blue | B - dominant b - recessive |
hair type | curly straight | H - dominant h - recessive |
father of genetics
scientist in the 1800s
studied traits in the garden pea plant while living at a monestary
used 28,000 pea plants to record his data
data was able to support 3 laws of genetics
mendel’s laws
Mendel’s Law of Dominance
dominants traits are expressed if it is present
Mendel’s Law of Segregation
allels are seperated during meiosis
each gamete recieves one allele of a trait
Mendel’s Law of Independent Assortment
the traits are seperated independently of all other traits in the organism
heterozygous genes are genes that:
have 2 different allels for one gene
also called “hybrid”
example; Aa
homozygous genes are genes that
have 2 of the same allele for one gene
also called “pure bred”
example; AA or aa
the genetic makeup of an individual
represented by letters for each allele
the observable characteristics of an individual organism
what the offspring looks like
possible outcomes of traits for offspring
