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SOLUTION: G7 c5 lab genetics pedigree worksheet - Studypool - Free Printable

Educational worksheet: SOLUTION: G7 c5 lab genetics pedigree worksheet - Studypool. Download and print for classroom or home learning activities.

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Show Answer Key & Explanations Step-by-step solution for: SOLUTION: G7 c5 lab genetics pedigree worksheet - Studypool

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- I-1: homozygous recessive
- II-1: heterozygous
- II-4: heterozygous
- III-3: homozygous recessive

Individuals II-3 and II-4 must be heterozygous because they are unaffected (phenotypically normal) but have produced affected offspring (III-3 and III-4). For a child to be affected by a recessive trait, they must inherit two recessive alleles, one from each parent. Since the parents show no signs of the disease, they must each carry one dominant allele (making them unaffected) and one recessive allele (which they passed on to their affected children), thus they are heterozygous.

Parent Tip: Review the logic above to help your child master the concept of pedigree worksheet biology.

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