The process of forming urine begins in the:

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird