What organisms carry out nitrogen fixation?

What differences would you expect to see in a population made up of individuals whose chromosomes experience crossing-over frequently compared with a population made up of individuals whose chromosomes do not cross over? Explain your reasoning.

An mRNA is 429 nucleotides long. The number of amino acids in the polypeptide chain formed from this mRNA is (A) 143. (B) 142. (C) 141. (D) 429. (E) 428.

Assume you have a 10-lb weight in your right hand. Explain why it is easier to flex the right elbow when your forearm is supinate than when it is pronated

Which measure of an earthquake depends on how close you re to the focus?

How many units of information does each gene contain? A. 1 B. 10 C. 100 D. 1000

b. Explaining A friend claims that pea plant grow faster than corn plants. Could you investigate this idea through scientific inquiry? Explain.

Why is a disease like osteoarthritis not considered an infectious disease?

What other word from this unit has a prefix homo and means to have two copies of the same allele

Kevin has been experiencing difficulty urinating now that he is over the age of 60. The doctor examines his prostate gland and finds no evidence of inflammation. Furthermore, Kevin's PSA test is normal. It is most likely that Kevin is suffering from

Which cells are more complex? (circle your answer) A. prokaryotic cells B. eukaryotic cells