Asmall group of people left their homeland and set sail for a tropical island. they settled there, and their descendants lived for many generations. unfortunately, a relatively high proportion of this new population is afflicted with an autosomal-recessive disease. what would explain this?
a. an unidentified environmental radiation source was present on the island.
b. one of the original group members had the gene mutation from conception.
c. they encouraged immigration of people from the mainland.
d. their lack of genetic diversity made them more vulnerable to new mutations

Which describes how weathering and erosion are different? weathering is caused by water. erosion is caused by wind and ice. erosion transports sediments. weathering is a natural process.

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.

Asegment id dna that is artificially created from two or more organism through use of dna enzymes in a laboratory is called a segment of dna that is artificially created from two or more organisms through use of dna enzymes in a laboratory is called