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PROBLEM #1: ORANGE COLOR IS DOMINANT TO

YELLOW COLOR IN FRAGGLES. IF YOU CROSS A

HOMOZYGOUS DOMINANT ORANGE FRAGGLE

WITH A HOMOZYGOUS RECESSIVE YELLOW

FRAGGLE, WHAT WOULD BE THE KIDS’

GENOTYPES AND PHENOTYPES?

PROBLEM: YOU EVER WONDER WHY PAPA SMURF WAS

THE THE ONLY SMURF WITH FACIAL HAIR? THAT IS

BECAUSE FACIAL HAIR IS RECESSIVE IN SMURFS,

WHILE NO FACIAL HAIR IS DOMINANT. IF YOU CROSS

PAPA SMURF (HOMOZYGOUS RECESSIVE) WITH

SMURFET (HETEROZYGOUS), WHAT WOULD THE KIDS

LOOKS LIKE?

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SCOOBY DOO HAS A RECESSIVE TRAIT, TALKING. MOST

DOGS CAN NOT TALK, WHICH IS DOMINANT. SCOOBY

MARRIES A NON-SPEAKING POODLE AND HAS THE

FOLLOWING OFFSPRING. WHAT WERE SCOOBY’S AND HIS

WIFE’S GENOTYPES?

T = NO TALK, t = TALKTt

tt

Tt tt

Many science students have pondered why Barney the

Dinosaur is much smaller and more purple than a typical T-

Rex. DNA evidence has revealed that Green coloration (G) is

dominant to purple color (g) in T-rex’s. Also, large size (L) is

dominant to small size (l). If Barney’s genotype is ggll and

mates with another T-Rex that has the genotype GgLl,

describe the different possible offspring genotypes and

phenotypes (including their probabilities).

Clean up, clean

up. Everybody

everywhere.

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PROBLEM: EVER WONDER WHY BIG BIRD IS SO BIG

AND TWEETY BIRD SO SMALL? LAVELLE

TECHNOLOGIES RESEARCHERS HAVE FOUND THAT

THEY ARE OF THE SAME SPECIES.

SHORTNESS (S) IS DOMINANT TO TALLNESS (s).

YELLOW COLOR (Y) IS DOMINANT TO ORANGE

COLOR (y).

CROSS BIG BIRD (ssYy) WITH TWEETY BIRD (SSYY).

DETERMINE THE POSSIBLE GENOTYPES AND

PHENOTYPES OF THE OFFSPRING.

Mr. Sponge Bob Squarepants ( a member of phylum Poriferaor sponges) has recently become engaged to Miss Jelly Jill Roundskirt ( a member of phylum Cnidaria or jellies). They went to a genetics counselor (you) to figure out if their kids will be sponges (hide your money!)(S) or jellyfish (s). Also, if they will have squarepants (P) or round skirts (p). They would like a genotype and phenotype ratio for each.

Bob is heterozygous for the sponge trait as well as for the type of garment. Jill is homozygous recessive for both traits.

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The cookie monster married Zoe. The dominant trait C (uncontrollably

smashing cookies in one’s own mouth) is the opposite of c (uncontrollably

sniffing cookies). Also googly eyes G is dominant to non-googly eyes, g.

Given the following offspring, determine the parent genotypes, provided

that cookie monser is heterozygous for both.

Smash cookies in own mouth

and non-googly eyes

Smash cookies in own mouth

and googly eyes

Smash cookies in own mouth

and non-googly eyes

Smash cookies in own mouth

and googly eyes

Smash cookies in own mouth

and non-googly eyes

Smash cookies in own mouth

and googly eyes

Smash cookies in own mouth

and non-googly eyes

Smash cookies in own mouth

and googly eyes

Smash cookies in own mouth

and non-googly eyes

Smash cookies in own mouth

and googly eyes

Smash cookies in own mouth

and non-googly eyes

Smash cookies in own mouth

and googly eyes

Smash cookies in own mouth

and non-googly eyes

Smash cookies in own mouth

and googly eyes

Smash cookies in own mouth

and non-googly eyes

Smash cookies in own mouth

and googly eyes

CcGg (cookie monster)