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Dihybrid Cross

Dihybrid Cross. What is Dihybrid Cross?. When we study two traits on different chromosomes , at one time, we call this a dihybrid cross . You still follow the same five step process for a Punnett Square there will be four times as many possibilities because we are studying two traits.

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Dihybrid Cross

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  1. Dihybrid Cross

  2. What is Dihybrid Cross? • When we study two traits on different chromosomes, at one time, we call this a dihybrid cross. • You still follow the same five step process for a Punnett Square • there will be four times as many possibilities because we are studying two traits.

  3. I Do • Ex) A tall green pea plant (TTGG) is crossed with a short white pea plant (ttgg). • TT or Tt = tall tt = short • GG or Gg = green gg = white

  4. A tall green pea plant (TTGG) is crossed with a short white pea plant (ttgg). TG TG TG TG tg tg tg tg

  5. TG TG TG TG tg tg tg tg 16 Tall/Green : 0 Tall/White : 0 Short/Green : 0 Short/ White

  6. A tall green pea plant (TTGg) is crossed with a tall green pea plant (TtGg) TG TG TG TG tg tg tg tg

  7. A tall green pea plant (TTGg) is crossed with a tall green pea plant (TtGg) TG Tg TG Tg TG Tg tG tg _____Tall/Green : _____ Tall/White : ____ Short/Green : ___ Short/ White

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