The science of crop production and improvement is called

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

Achild is suffering from fever but the doctor cannot immediately pinpoint the alignment on the basis of this one symptom explain why also mention other two such general symptoms

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome