Chromosomal mutations can have a variety of effects on individuals. klinefelter syndrome is a genetic disorder that occurs when a male has an extra copy of the x chromosome. males who have this disorder exhibit characteristics such as producing little or no facial hair, having a less muscular body than other males, and sterility. karyotype of klinefelter syndrome mc011-1.jpg which type of chromosomal mutation causes klinefelter syndrome? nondisjunction translocation deletion insertion

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Describe the function of the endomembrane system? what organelles are involved?

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.