Testcross:

used to determine true-breeding variety of plant (A_ x aa cross an unknown dominant phenotype with a homozygous recessive to determine if second allele is A OR a.)

2-Factor Crosses:

2 traits being passed on

- probabilities

2 coins flipped simultaneously.

Chance of tails/tails? 1/2 tails x 1/2 tails = 1/4.

- phenotypes

ratios, what you see

- genotypes

ratios, genes

*Within each trait, dominant allele before recessive.

*stay in the order of the traits that you are given

ex. SSyy

SsYY

SsYy

SSYy

ssYy

ssYY

Lab #34:

Probability

**Mendel's Laws**: know these!!

-law of dominance

-law of segregation

-law of independent assortment

Read carefully!!

Homework:

Finish Lab #34, UP p.59-62

Make sure you understand Meiosis and Mitosis!!!

Next Scribe: CJ

You made the concept of the lesson a lot easier to comprehend! Great summarization and the diagram helped me a lot.

ReplyDelete