3. When did reptiles first appear in the fossil record? sc.7.E.6.4
A Early Cenozoic
B Late Cenozoic
C Early Paleozoic
D Late Paleozoic

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols

Suppose a particular species of tulip plant has three alleles for the gene that codes for flower color. the cr allele produces red tulips, the cp allele produces purple tulips, and the cw allele produces white tulips. cr is dominant over cp and cw, and cp is dominant over cw. for each of the following crosses, determine the expected ratio of offspring for each flower color. cr cp x cp cw cr cw x cp cw 1 red: 1 purple : 0 white, 1 red: 2 purple: 1 white, 2 red: 1 purple 1 white, 1 red: 3 purple : 0 white, 2 red: 0 purple : 2 white, 2 red: 2 purple : 0 white