For a certain breed of cat, short tails are dominant (t) and long tails are recessive (t). the punnett square below shows a cross between two parents. what is the phenotype ratio for this cross?

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .