Understanding the vocabulary in the Understanding the vocabulary in the questions is extremely importantquestions is extremely important.  .  I've noticed that once students get I've noticed that once students get the square set up they do just fine, the square set up they do just fine, it's  that interpretation of the words it's  that interpretation of the words in the question that they find most in the question that they find most challenging. So challenging. So LEARN THE VOCABLEARN THE VOCAB (homozygous, heterozygous, (homozygous, heterozygous, genotype, phenotype, cross, etc.)genotype, phenotype, cross, etc.)

QUESTION – What is the difference QUESTION – What is the difference between genotype and phenotype?between genotype and phenotype?

Let's say that in seals, the gene for Let's say that in seals, the gene for the length of the whiskers has two the length of the whiskers has two alleles.  The dominant allele (W) alleles.  The dominant allele (W) codes long whiskers & the recessive codes long whiskers & the recessive allele (w) codes for short whiskers.allele (w) codes for short whiskers.

A)  What percentage of offspring A)  What percentage of offspring would be expected to have short would be expected to have short whiskers from the cross of two long-whiskers from the cross of two long-whiskered seals, one that is whiskered seals, one that is homozygous dominant and one that homozygous dominant and one that is heterozygous?is heterozygous? B) If one parent seal is homozygous B) If one parent seal is homozygous long-whiskered and the other is long-whiskered and the other is short-whiskered, what percent of short-whiskered, what percent of offspring would have short whiskers?offspring would have short whiskers?

In purple people eaters, In purple people eaters, one-horn is dominant and one-horn is dominant and no horns is recessive. Draw no horns is recessive. Draw a Punnet Square showing a Punnet Square showing the cross of a purple people the cross of a purple people eater that is heterozygous eater that is heterozygous for horns with a purple for horns with a purple people eater that does not people eater that does not have horns. Summarize the have horns. Summarize the genotypes & phenotypes of genotypes & phenotypes of the possible offspring.the possible offspring.

In rabbits, three toes are dominant to two toes. In rabbits, three toes are dominant to two toes. What are the genotypes / phenotypes of the parents What are the genotypes / phenotypes of the parents and their offspring. The parents are homozygous and their offspring. The parents are homozygous recessive and homozygous dominant. recessive and homozygous dominant.

In rabbits, red eyes are dominant to black eyes. In rabbits, red eyes are dominant to black eyes. What is the chance that a parent who has What is the chance that a parent who has homozygous alleles for red eyes and a parent that homozygous alleles for red eyes and a parent that has heterozygous alleles for eye color will have has heterozygous alleles for eye color will have offspring with black eyes?offspring with black eyes?