What happens in a Larkey population? Larkey Genetics What happens in a Larkey population?

From Genotype to Phenotype! Decode the genotype to produce the Larkey’s phenotype!

Larkey Parents Female Parent Male Parent Genotype Genotype A A a a E E e e f f F F t t T T Record their genotypes and draw the phenotypes on the “Larkey Breeding Record.”

Larkey Genetics The parent Larkeys will produce a male and female Larkey. Record their genotypes and draw the phenotypes on the “Larkey Breeding Record.”

F1 Generation Results Genotypes = Aa, Ee, Ff, and Tt Phenotypes = short legs, red eyes, solid fur, bushy tails All offspring will have the same genotypes, and therefore, the same phenotypes. Why?

Types of Alleles homozygous alleles = both parents started with genotypes that had identical alleles, so there is little diversity; homozygous may be two dominant or two recessive alleles; AA, aa, EE, ee, etc. heterozygous alleles = genes with one dominant allele and one recessive allele; Aa, Ee, etc.

Punnett Squares This is a simple graphical way of discovering all of the potential combinations of genotypes that can occur in children, given the genotypes of their parents. It also shows us the odds of each of the offspring genotypes occurring.

Immigrant Male Now, an immigrant male produces a son and a daughter with the female. This will increase diversity!

F2 Generation Genotypes Female Immigrant Male Genotype Genotype A a A A E e E E F f F f T t t t

F2 Generation Results-Male Genotypes = Aa, EE, FF, and Tt Phenotypes = As more Larkeys are introduced, the genetic diversity will increase! This creates a healthy population. Record their genotypes and draw the phenotypes on the “Larkey Breeding Record.”

F2 Generation Results-Female Genotypes = AA, EE, ff, and tt Phenotypes = short legs, red eyes, spotted fur, bare tail As more Larkeys are introduced, the genetic diversity will increase! This creates a healthy population. Record their genotypes and draw the phenotypes on the “Larkey Breeding Record.”

Reading Assignment! With another person at your table group, you will FINISH THIS ASSIGNMENT: Partner read pages 46 through 55. Under each green heading, you will write down 2-3 things you learned in your Science Notebook! Finished Early? Come see me! 