Which of these is an example of active immunity? a) a pregnant woman passing antibodies to the fetus across the placenta
b) a pregnant woman giving antibodies to an infant through breast milk
c) a person developing antibodies against the measles vaccine
d) a person receiving antibody shots after being bitten by a rabid animal

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

Which is an example of a population?

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.