How are sex-linked traits inherited?
a) alleles are passed from the parents’ sex chromosomes to nonsex chromosomes in the offspring.
b)alleles are passed from the parents’ nonsex chromosomes to the sex chromosomes in the offspring.
c)alleles are passed from the parents’ sex chromosomes to the sex chromosomes in the offspring.
d)alleles are passed from the parents’ nonsex chromosomes to nonsex chromosomes in the offspring.

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.