Genetics

The scientific study of heredity is called GENETICS

Gregor Mendel experimented on pea plants.

Experimented with plant traits. P 177 Example-seed shape, pod color

Gene is a factor that controls a trait

Allele-several forms of a gene Homo – Same-RR Hetero – Opposite-Rr Pheno – Physical result Geno – Genetic- combination Dominant-shows up Recessive-hidden **Turn to Genetic practice problems

You must flip the coin many times. Probability How can you be sure of getting the expected 50 : 50 ratio from flipping a coin? You must flip the coin many times.

The likelihood that a particular event will occur is called_______. Probability

Probability Circle the letter of the probability that a single coin flip will come up heads. a. 100 percent b. 75 percent c. 50 percent d. 25 percent

Punnett Square Complete the Punnett square to show the possible gene combinations for the F2 offspring.

Draw a box and divide in 4 squares Punnett Square Draw a box and divide in 4 squares Write the male alleles on top of the square Rr Write the female alleles on the side of the square Rr Complete the Punnett square.

R r R R R R r r R r r r