Question

gregor mendel described several unlinked traits in pea plants in which a dominant trait masked a recessive trait. two such traits were plant height (t = tall, t = short) and seed shape (r = round, r = wrinkled). match each genotype below with its expected phenotype. ttrr ttrr ttrr ttrr ttrr ttrr ttrr short and round short and wrinkled tall and round tall and wrinkled

Explanation:

• For plant height, \(T\) (tall) is dominant over \(t\) (short). So, if the genotype has at least one \(T\) (e.g., \(TTRR\), \(TTRr\), \(TtRr\), \(TTrr\), \(Ttrr\)), the plant height phenotype is tall. If the genotype is \(tt\) (e.g., \(ttRR\), \(ttrr\)), the plant height phenotype is short.
• For seed shape, \(R\) (round) is dominant over \(r\) (wrinkled). So, if the genotype has at least one \(R\) (e.g., \(TTRR\), \(TTRr\), \(TtRr\), \(ttRR\)), the seed - shape phenotype is round. If the genotype is \(rr\) (e.g., \(TTrr\), \(Ttrr\), \(ttrr\)), the seed - shape phenotype is wrinkled.

Answer:

• \(TTRR\): tall and round
• \(TTRr\): tall and round
• \(TtRr\): tall and round
• \(TTrr\): tall and wrinkled
• \(Ttrr\): tall and wrinkled
• \(ttrr\): short and wrinkled
• \(ttRR\): short and round