Is an allele for a trait that has no effect on a species fitness affected by natural selection?

The guppy is a species of small freshwater fish. Scientists observed that the average size of guppies in a pond decreased over a few years after a guppy predator was introduced into the pond.

Which of the following is NOT a true statement about ATP? A. used ATP is discarded by the cell as waste. B. ATP consists of ribose, adenine and phosphate. C. ADP forms when ATP releases energy. D.

The reaction catalyzed by reverse transcriptase is A) DNA → mRNA. B) mRNA → cDNA. C) mRNA → protein. D) DNA → DNA. E) tRNA → mRNA.

What is a dissecting pan used for in biology?

Which cell structures are found in plant cells, but not in animal cells? Check all that apply. I cell wall cell membrane endoplasmic reticulum nucleus chloroplasts mitochondria Intro

In a small, isolated population of piranhas, one individual is born with a synonymous mutation in a gene that codes for the beta-globin protein found in hemoglobin. After five generations, 5% of the piranhas carry this mutation.

What is dna in biology

Amino acids with hydrophobic r groups are most often found buried in the interior of folded proteins. True or False.

Which division of the plant kingdom is made up of plants that have flowers or fruit? A.) Angiosperms B.) Gymnosperms C.) Nonvascular plants D.) Seedless vascular plants

explain how the elimination of a predator from a ecosystem might result in starvation amongst its prey speies