In **co-dominance** (e.g. coat colour in cattle), the F₁ of a red × wh…

Question

In **co-dominance** (e.g. coat colour in cattle), the F₁ of a red × white cross is:

Accepted Answer

C. Roan (red AND white hair together)

**Co-dominance:** both alleles are expressed equally.
RR × WW gives F₁ RW = **roan** — coat has a mixture of red and white hairs (not blended pink).
F₂ ratio is 1 red : 2 roan : 1 white.
ABO blood groups (IA, IB co-dominant) are another classic example.

Answer

Red

Answer

White

Answer

Pink

In co-dominance (e.g. coat colour in cattle), the F₁ of a red × white cross is:

Keep practising Unit 5C: Non-Mendelian Genetics & Population Transmission