A boy has brown hair and blue and his brother has brown hair and brown eyes. the fact that they have different combinations of traits is the best-explained concept of A= sex linkage
B=independient assortment
C=mitoic recombination
D=imcomplete dominance

During the process of meiosis, special cells called gametes are formed. gametes only have half the number of chromosomes that the other cells in the body have. what form of reproduction do organisms that produce gametes use?

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.

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.