How do we smell a gas​

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?

Genes that come together with different alleles are heterozygous. homozygous. genotype. segregated.