Gene expression within the body is controlled by the cells, which determine when a specific gene should or should not be expressed. influenza (the flu) is caused by a virus that attacks the respiratory system. which type of gene is likely to be widely expressed in the body of someone who contracts the influenza virus?

a. the gene that controls production of stem cells.
b. the gene that controls production of skin cells.
c. the gene that controls production of red blood cells.
d. the gene that controls production of white blood cells.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.

What do nitrifying bacteria convert