Bell Work

1. What scientist is known as the father of genetics.

2. What plant did he use for his research?

3. Why did he use this plant type?

4. What is a hybrid plant?

Vocabulary

Genes: section on a chromosome that has genetic information for one trait.

Alleles: different forms of a gene.

Vocabulary - Recessive Alleles

• Alleles that are written with lowercase letters, and are only expressed when paired with another recessive allele– Ex) Having blue eyes is recessive and having

brown eyes is dominant.Having blue eyes allele : b

Having brown eyes allele: B

Vocabulary - Dominant Alleles

• Alleles that are written with capital letters, and are always expressed or seen even if they are paired with another allele– Ex) Having a Widow’s Peak is dominant over not

having a Widow’s Peak.

Having a Widows Peak Allele : W

Not Having a Widows Peak Allele: w

Vocabulary - Genotype• The type of alleles you have in your genes for a

particular traitThere are 3 different combinations of Genotypes:1) 2 recessive alleles (ww) = Homozygous Recessive2) 2 dominant alleles (WW) = Homozygous Dominant3) One dominant and one recessive allele (Ww) = Heterozygous

The prefix “Hetero” means different = Different alleles!ex) Heterosexual = you are attracted to individuals of the opposite sex

The prefix “Homo” means the same = Same alleles!ex) Homosexual = you are attracted to individuals of the same sex

Vocabulary - Phenotype

• The physical trait that is expressed from the genotype

W = Widows Peak w = straight hairline

• Ex) Genotype = WW Phenotype = • Ex) Genotype = Ww Phenotype = • Ex) Genotype = ww Phenotype =