What is considered to be the first evidence of differentiation in the cells of an embryo?

What happens to orbital velocity of earth as it gets closer to the sun

A scientist in a lab looks under a microscope at muscle tissue and makes a few observations on what he notices.

What is the difference between primary dimensions of diversity and secondary dimensions of diversity? A. Primary dimensions are less changeable, while secondary dimensions can change and are less visible. B.

DNA is genetic material that provides instructions for all cell processes. Where is the DNA located in prokaryotes

The nervous system contains not only neurons but also other cells called: axons. glial cells. dendrites. myelin cells.

Plant species A has a diploid number of 12. Plant species B has a diploid number of 16. A new species, C, arises as an allopolyploid from A and B. The diploid number for species C would probably be A) 12. B) 14. C) 16. D) 28. E) 56.

Which seedless plants have been used to treat burns? club mosses mosses ferns horsetails

Ecosystems have trouble adjusting to short term changes t f

Since the llamas will not sell well with malformed feet, you decide to select the herd against this defect.

Flattened membranes that package cellular substances for export are called