Karyotyping is used to: study chromosomes.
treat Down syndrome.
repair chromosomes.
diagnose genetic diseases.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: