BIOL 133 Week 8 Chapter 12 Question and Answers (BIOL 133)

1. What statement describes X-linked traits? Select all that apply. 2. Sickle cell anemia is a recessive trait. A cross between two heterozygotes would produce what phenotypic ratio? 3. Marfan syndrome is a dominant trait. A cross between a homozygous dominant and a heterozygote would produce what phenotypic ratio? 4. If a cross for widow’s peak was conducted between a homozygous dominant and a heterozygote, it is expected that all organisms of the offspring will have widow’s peak. ...