An area within the nucleus that appears through the microscope due to the densely stained chromatin fibers where ribosomal rna is being produced in high quantities.

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

Identify the main component f natural gas

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.