Why did scientists reject lamarck’s idea of evolution? a. organisms have not changed during earth’s history. b. organisms cannot change their characteristics during their lifetime. c. traits acquired during a lifetime are not passed on to offspring. d. traits acquired during a lifetime are of no use to an individual.

How does the molecular clock work? a. it analyzes the brain functionality of two different species.b. it examines and compares the physical characteristics of two different species.c. it illustrates relationships between two different species.d. it compares the number of mutations that exist in the dna of two different species.

1. fold your hands together so your thumbs cross over ,and look at your thumbs. which thumb feels most "comfortable" on top is actually controlled by a gene. the left thumb folding over the right thumb is a domi

Based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ?