What was Marshall Nirenberg and Heinrich Matthaei's contribution to our current understanding of the genetic code?

discovery of codons

discovery and extraction of DNA

creation of a model of DNA

creation of Photo 51

How do you create a "killed vaccine"?

Bacteria reproduce in a process called binary fission. Which of the following statements is true about binary fission? A. It is a form of sexual reproduction. B. It increases genetic diversity in the offspring C.

How do antibiotic-rich environments like hospitals speed up the rate at which superbugs increase their percentage of the bacteria population?

Which one of the following statements is true regarding transcription-coupled repair? Transcription-coupled repair involves all the major nucleotide excision repair proteins, as well as RNA polymerase.

In humans, hemophilia is caused by an X-linked recessive gene. A woman who is a nonbleeder - that is, she does not display the blood-clotting irregularities associated with hemophilia - had a father who was a hemophiliac.

What is the job of the kidneys

What is mulch and give two materials that can be used as mulch

The DNA structure is similar to a ladder. Choose the molecules that make up the "rails" or sides of the DNA structure. ribose guanine adenine thymine deoxyribose phosphate uracil cytosine

Climate change on earth is thought to be affected by which of the following solar phenomena? A. solar eclipses B. solar flares C. solar prominences D. sunspots

What type ofreproduction produces fungi that are different from either parent