Question

1. the main scientist whose theory on evolution is most widely accepted today is:

a) linnaeus
b) darwin
c) lamarck
d) alfred wallace

1. the theory of evolution suggests that:

a) apes become humans
b) mutations lead to evolution
c) species gradually change over time through natural selection.
d) fit individuals survive to pass on their genes.

1. current evidence for evolution includes:

a) fossils
b) anatomical and chemical analysis
c) geographical distribution of species
d) all the above

1. which of the following does not lead to the evolution of a species?

a) sexual reproduction
b) mutation
c) natural selection
d) gene flow between populations

1. the key elements of evolution include:

a) variations in the gene pool
b) adaptations possessed by a species
c) modification of a species over time
d) all the above

Explanation:

1. Charles Darwin's theory of evolution by natural selection is widely accepted. Linnaeus was a taxonomist, Lamarck had an incorrect theory (inheritance of acquired characteristics), and Alfred Wallace co - proposed the theory but Darwin's work is more prominent.
2. The theory of evolution (Darwin's) states that species gradually change over time through natural selection. Apes do not become humans (humans and apes have a common ancestor), mutations are a source of variation but evolution is about the change of species over time through natural selection, and "fit individuals survive to pass on their genes" is part of natural selection but the full statement of the theory is about species change.
3. Fossils show the history of life, anatomical and chemical analysis (e.g., homologous structures, DNA similarities) and geographical distribution of species (e.g., island species) all provide evidence for evolution.
4. Sexual reproduction mainly causes genetic variation within a population in a short - term non - evolutionary sense (in terms of species evolution). Mutation provides new genetic material, natural selection acts on variations to drive species change, and gene flow can introduce new alleles to a population which can be a factor in evolution.
5. Variations in the gene pool (from mutation, etc.) are the raw material, adaptations are the result of natural selection acting on variations, and modification of a species over time is the outcome. So all are key elements.

Answer:

1. B. Darwin
2. C. Species gradually change over time through natural selection.
3. D. All the above
4. A. Sexual reproduction
5. D. All the above