Evolution
a) doesn't happen below the species level
b) is always caused by mutati...
Biology, 17.10.2019 08:50 MayFlowers
Evolution
a) doesn't happen below the species level
b) is always caused by mutation
c) is a slow, gradual change over time
d) happens very quickly
Answers: 2
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What is thought to have caused the mass extinction at the end of the cretaceous period?
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Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.
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What type of organism is a one-celled organism that functions as a single unit? a. bi-celled b. single-celled c. pre-celled d. multi-celled
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