The allele that causes sickle-cell anemia is the result of . a) an insertion leading to a frameshift mutation that changed all downstream codons b) a single base substitution causing a transversion mutation c) two chromosomal translocations followed by fusions d) a silent mutation, which is why it goes unnoticed until adulthood

Explain how organisms could be harmed by high levels of salt from roadways?

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters