Question

ricky ?jenniolatishaocarrieolexiosaraatype atype btype abtype owhat term describes the physical traits of a person?dominantgenotypegenomephenotype

Explanation:

First Question (Blood Type Pedigree)

Step1: Recall blood type genetics

Blood type is determined by alleles: $I^A$, $I^B$ (codominant), $i$ (recessive). Type O = $ii$, Type A = $I^A I^A$ or $I^A i$.

Step2: Analyze Jenni's genotype

Jenni has Type O, so her genotype is $ii$. She can only pass $i$ to offspring.

Step3: Analyze Sara's genotype

Sara has Type A. She inherited $i$ from Jenni, so her genotype is $I^A i$. The $I^A$ must come from Ricky.

Step4: Confirm Ricky's possible type

Ricky must carry $I^A$. The only option that includes $I^A$ is Type A (genotype $I^A I^A$ or $I^A i$).

• Dominant: An allele that masks recessive traits, not physical traits.
• Genotype: The genetic makeup of an organism, not physical traits.
• Genome: The complete set of an organism's genetic material, not physical traits.
• Phenotype: The observable physical traits of an organism, matching the question's description.

Answer:

Type A

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Second Question (Genetics Term)