Mutations in certain genes of bacteria cause them to be resistant to powerful antibiotics. What type of mutation is this for the bacteria?

A: beneficial

B: harmful

C: neutral

D: both beneficial and harmful

What is a gene? a. the molecular unit of heredity b. a stretch of dna that contains the information to produce a functional rna or protein c. a genetic variant that produces a particular phenotype d. both a and b are correct e.

Why do some dna fragments move farther than others during gel electrophoresis?

Which term describes learning that takes less time because the brain has already stored some of the information needed

What structure in the cytoplasm of the cell is the physical site for the formation of proteins?

True or false: student loans often don't require you to start paying them back until after you've completed the course (s). a. true b. false

When do solar eclipses occur?

What occurs when carbon is returned to the atmosphere from the burning of what

1. what moon phase occurs when the moon is between the sun and earth? 2. what moon phase occurs when the earth is between the sun and moon

Which factors contribute to changing igneous and sedimentary rocks into metaphoric rocks? Select all that apply. Weathering Erosion Heat Deposition Pressure

How many and what type of chromosomes would be expected in a karyotype of a human male? 22 pairs of autosomal chromosomes and 2 Y chromosomes. 23 pairs of autosomal chromosomes and 2 Y chromosomes.