Put these events of earth’s history in the order that they happened: dominance of mammals, sharks and trilobites abundant in the oceans, dominance of reptiles, development of the ozone layer, plants and animals colonizing land.

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.

Dna and rna share a number of similarities,but they also differ in certain aspects of their structure. wich nitrogenous base is found in rna but is not found in dna