Question

vocabulary practice - applying what youve learned
in the space below, circle the word (or words) that correctly describe the information provided. if you get stuck,
refer to your vocabulary thinking map on the previous page!

1. curly hair circle one: this is a genotype this is a phenotype
2. aa circle one: this is a genotype this is a phenotype

3 g circle one: this is a genotype this is an allele

1. hh circle one: homozygous dominant heterozygous homozygous recessive
2. tt circle one: homozygous dominant heterozygous homozygous recessive

6 bb circle one: homozygous dominant heterozygous homozygous recessive

1. h circle one: this is a dominant allele this is a recessive allele
2. h circle one: this is a dominant allele this is a recessive allele

the image below summarizes the genetic and physical characteristics of patrick star. based on this
informaton, fill in the blanks below.
patricks genotype: ____
patricks phenotype: ____
the dominant allele: ____
the recessive allele: ____
exit ticket
in pea plants, the allele that codes for round seeds is r and the allele that codes for wrinkled
seeds is r. based on this information, if a pea plant has the genotype rr, what color seeds will it
shape
of seeds
round
wrinkled
have? how do you know?
____
____
____
____
challenge question - can you figure it out???
five years later, your black lab puppy has grown up and is ready to have puppies of its own. it has a
baby with another black lab. when the new baby is born, you cant believe your eyes. the baby puppy
has yellow fur - it doesnt look like either of its parents! once again, you return to the vet demanding
answers. can you figure out how this could have happened?

Explanation:

Vocabulary Practice (Circle the correct term)

1. Curly Hair: Phenotype (physical trait) → Circle "This is a PHENOTYPE"
2. Aa: Genotype (genetic makeup) → Circle "This is a GENOTYPE"
3. g: Allele (variant of a gene) → Circle "This is an ALLELE"
4. Hh: Heterozygous (different alleles) → Circle "Heterozygous"
5. TT: Homozygous Dominant (two dominant alleles) → Circle "Homozygous Dominant"
6. bb: Homozygous Recessive (two recessive alleles) → Circle "Homozygous Recessive"
7. H: Dominant Allele (uppercase, expressed over recessive) → Circle "This is a Dominant Allele"
8. h: Recessive Allele (lowercase, masked by dominant) → Circle "This is a Recessive Allele"

Patrick Star’s Genetics

• Genotype: \( Gg \) (from the image: "Patrick Star: \( Gg \)")
• Phenotype: Pink Skin (since \( G \) = Pink Skin, and \( G \) is dominant; \( Gg \) expresses the dominant trait)
• Dominant Allele: \( G \) (codes for Pink Skin, uppercase)
• Recessive Allele: \( g \) (codes for Yellow Skin, lowercase)

Exit Ticket (Pea Plants)

• Seed Shape: Round
• Why?: The allele for round seeds (\( R \)) is dominant. A plant with genotype \( Rr \) has one dominant (\( R \)) and one recessive (\( r \)) allele. Dominant alleles are expressed in the phenotype, so the plant will have round seeds.

Challenge Question (Black Lab Puppies)

Both parent labs must be heterozygous (e.g., \( Bb \), where \( B \) = black fur, \( b \) = yellow fur). Black fur is dominant (\( B \)), so heterozygous parents (\( Bb \)) appear black. When they reproduce, there is a 25% chance of offspring inheriting two recessive alleles (\( bb \)), which expresses yellow fur (recessive trait). This is why the puppy looks different: it inherited the recessive allele from both parents.

Answer:

Vocabulary Practice (Circle the correct term)

1. Curly Hair: Phenotype (physical trait) → Circle "This is a PHENOTYPE"
2. Aa: Genotype (genetic makeup) → Circle "This is a GENOTYPE"
3. g: Allele (variant of a gene) → Circle "This is an ALLELE"
4. Hh: Heterozygous (different alleles) → Circle "Heterozygous"
5. TT: Homozygous Dominant (two dominant alleles) → Circle "Homozygous Dominant"
6. bb: Homozygous Recessive (two recessive alleles) → Circle "Homozygous Recessive"
7. H: Dominant Allele (uppercase, expressed over recessive) → Circle "This is a Dominant Allele"
8. h: Recessive Allele (lowercase, masked by dominant) → Circle "This is a Recessive Allele"

Patrick Star’s Genetics

• Genotype: \( Gg \) (from the image: "Patrick Star: \( Gg \)")
• Phenotype: Pink Skin (since \( G \) = Pink Skin, and \( G \) is dominant; \( Gg \) expresses the dominant trait)
• Dominant Allele: \( G \) (codes for Pink Skin, uppercase)
• Recessive Allele: \( g \) (codes for Yellow Skin, lowercase)

Exit Ticket (Pea Plants)

• Seed Shape: Round
• Why?: The allele for round seeds (\( R \)) is dominant. A plant with genotype \( Rr \) has one dominant (\( R \)) and one recessive (\( r \)) allele. Dominant alleles are expressed in the phenotype, so the plant will have round seeds.

Challenge Question (Black Lab Puppies)

Both parent labs must be heterozygous (e.g., \( Bb \), where \( B \) = black fur, \( b \) = yellow fur). Black fur is dominant (\( B \)), so heterozygous parents (\( Bb \)) appear black. When they reproduce, there is a 25% chance of offspring inheriting two recessive alleles (\( bb \)), which expresses yellow fur (recessive trait). This is why the puppy looks different: it inherited the recessive allele from both parents.