Is there a way to detect down syndrome/trisomy 21 in heterozygous carriers before they reproduce (become parents)? is there a way to detect it in a fetus? in a newborn child?

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.

Aperson is outside exercising. body temperature begins to rise, and the person starts to sweat. their body temperature then returns to normal, and the body stops sweating. a positive b negative c allosteric d homeopathic

The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations