Inheritance of Traits Reading Science
3. Which of the following statements best describes the structure, or makeup, of a codon?
A. A codon is a three-letter nucleotide sequence found on the tRNA.
B. A codon is a growing polypeptide chain.
C. A codon is a gene sequence found on the DNA strand.
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D. A codon is a three-letter nucleotide sequence found on the mRNA.

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms

Explain why biological control methods are generally environmentally superior to chemical pest control methods.