Date: Feb 4, 2015 Page: Table of Contents p. 1. W. O. D: Last 5 pages Date: Feb 4, 2015 Page: Table of Contents p. 1 W.O.D: Last 5 pages Warm-ups:Front Cover W.O.D: Allele = the different forms of a gene. Question: In peas, the allele for flower color could either indicate pink or _________.

You have one copy of each gene from each of your parents. Some are dominant: TT, Tt & Some are recessive: tt

Vocab words for Thursday Homozygous = Two copies of the same allele of a trait (AA, aa)   Heterozygous = One dominant and one recessive allele for a trait (Aa) Phenotype = physical appearance of an organism (observable traits) Genotype = Genetic make-up of traits, or an entire organism Dominant = Allele that is expressed as the phenotype in heterozygous pairs (Aa) Recessive = Allele that is not expressed in heterozygous pairs (Aa)

The probability of dominant and recessive traits can be show in a Punnett Square:

Step one: Know the parents Is the parent heterozygous (they carry a DOMINANT and a recessive trait): Tt Or homozygous dominant (they carry two DOMINANT traits): TT Or homozygous recessive (they carry two recessive traits): tt

Reading: p. 262-266 (p. 22-23) Notice vocabulary as you read. Do the questions on page 266 (1-6) Complete the “Thinking Visually” diagram.

Which trait is dominant, pink color or white color flowers? Reflection: Which trait is dominant, pink color or white color flowers?