Despite acidic conditions, some microorganisms have been found residing within the human stomach.
Answer the following statement true (T) or false (F)
True
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What mutations occurred in typical icefish that prevented production of hemoglobin?
A. fragmentation of both the alpha and beta genes B. deletion of the alpha gene and fragmentation of the beta gene C. deletion of both the alpha and beta genes D. fragmentation of the alpha gene and deletion of the beta gene E. destruction of red blood cells in the bone marrow
During the reactions of photosynthesis, __________ is reduced and __________ is oxidized
a. O2; C6H12O6 b. CO2; C6H12O6 c. H2O; C6H12O6 d. O2; H2O e. CO2; H2O
Your tongue does NOT grow hair because
A) skin cells have extra DNA that codes for hair proteins. B) the genes for hair proteins have been deleted from the cells of your tongue. C) saliva prevents hair from growing. D) different genes are expressed in different tissues.
What is considered to be the average natural mutation rate that occurs during DNA replication?
a. One in every million nucleotides replicated. b. One in every trillion nucleotides replicated. c. One in every billion nucleotides replicated. d. One in every ten thousand nucleotides replicated.