how traits are passed down to offspring

genetics

explains and predicts how traits are passed from one generation to the next

dominant (RR) or (Rr)

exerts an effect whenever present

recessive (rr)

effect is masked by dominant allele

true or false: dominant means better

false

alleles

multiple versions of genes

an offspring inherits HOW MANY alleles for each gene

2

Homozygous =

same (RR)

Heterozygous =

different (Rr)

In Punnett squares, horizontal lines represent …

reproducers

in Punnett squares, vertical lines represent …

production

Incomplete dominance

2 alleles BUT 3 traits form (phenotypes) - the two alleles blend, therefore neither are dominate

codominance

2 alleles are equally shown (a while chicken and black chicken would NOT make a gray chicken)

Phenotype

physical traits

When traits are the result of multiple genes interacting

polygenic traits

skin color and height are examples of what type of traits

polygenic

true or false: genes can be affect by the environment

true (ex. temp, hormones, diet, etc.)