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.

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Presentation transcript:

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.

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

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

TtGg TG tg 16 Tall/Green : 0 Tall/White : 0 Short/Green : 0 Short/ White

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

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

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