Can you figure out where our buzzwords go?? Dominant Gametes Genotype Proportion Variation Heterozygous Complete Dominance Codominance Sex-linked trait Sex-linked gene Multiple alleles Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Polygenic traits

Allele Recessive Phenotype Offspring Homozygous Dominant 23 Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Variation Heterozygous Complete dominance Sex-linked gene Multiple alleles Polygenic traits 23

Dominant Gametes Genotype Proportion Variation Heterozygous Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Variation Heterozygous Sex-linked gene Multiple alleles Polygenic traits

Aa TTWw aa AA TtWW Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance aa Dominant Gametes Genotype Proportion Variation Heterozygous Sex-linked gene Multiple alleles Polygenic traits AA TtWW

r Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Variation Heterozygous Sex-linked gene Multiple alleles Polygenic traits

Pp Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Variation Heterozygous Sex-linked gene Multiple alleles Polygenic traits

Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Variation Heterozygous Sex-linked gene Multiple alleles Polygenic traits

Different forms of a gene Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Variation Heterozygous Sex-linked gene Multiple alleles Polygenic traits

R Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Genetic variation Heterozygous Sex-linked gene Multiple alleles Polygenic traits

Different combinations produce … Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Genetic variation Heterozygous Sex-linked gene Multiple alleles Polygenic traits

TT or tt Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Genetic variation Heterozygous Sex-linked gene Multiple alleles Polygenic traits

Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Two alleles blend their characteristics in a trait. Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Genetic variation Heterozygous Complete dominance Sex-linked trait Multiple alleles Polygenic traits

Allele Recessive Phenotype Offspring Homozygous Incomplete dominance One allele completely masks the other Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Genetic variation Heterozygous Complete dominance Sex-linked gene Multiple alleles Polygenic traits

Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Both alleles are equally dominant – both are expressed. Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Genetic variation Heterozygous Complete dominance Sex-linked gene Multiple alleles Polygenic traits

Allele Recessive Phenotype Offspring Homozygous Incomplete dominance More than two alleles can code for a gene. Ex. Human blood type is controlled by three alleles: IA , IB and i. Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Genetic variation Heterozygous Complete dominance Sex-linked gene Multiple alleles Polygenic traits

Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Caused by genes found on the X chromosome. Fewer females are afflicted because they have two X chromosomes and the other is usually normal. Ex. Colorblindness, Hemophilia (inability to clot blood) – both are recessive. Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance Dominant Gametes Genotype Proportion Genetic variation Heterozygous Complete dominance Sex-linked traits Multiple alleles Polygenic traits

Allele Recessive Phenotype Offspring Homozygous Incomplete dominance More than two genes control a trait. This trait often show a wide range of phenotypes. Ex. The variety of skin color, in humans comes about partly because more than four different genes probably control this trait. Dominant Gametes Genotype Proportion Genetic variation Heterozygous Complete dominance Sex-linked gene Multiple alleles Polygenic traits Allele Recessive Phenotype Offspring Homozygous Incomplete dominance Codominance

Show me (use letter “T” & “t”) Recessive allele Homozygous recessive genotype Heterozygous genotype Two parents that are both heterozygous for a trait Dominant allele Homozygous dominant genotype One parent that is heterozygous and the other that is homozygous recessive tt Tt Tt x Tt T If time TT Tt x tt

Show me (using pieces in baggie) What the gametes would be if a parent was AABB What the gametes would be if a parent was Aabb What the gametes would be if a parent was AaBb. AB, AB, Ab, AB Ab, Ab, ab, aB If time Ab, Ab, aB, ab

Predict their parents' genotypes

Results in 1/2 black pups and 1/2 blonde pups