The family tree below shows the trait of color blindness. the only unknown is the mother in the first generation.

what must be true about the mother?
a. she is color-blind.
b. she has two recessive color blindness alleles.
c. she has at least one recessive color blindness allele.
d. she only has one x chromosome.

Exit what always affects measurement error in an experiment? a. investigator bias b. variability in nature c. instrument precision d. misreading the instrument

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half