Based on interpretations of rock units and changes in fossil life forms, geologists have dived earths history into manageable units that are represented by the a. geologic time scale b. fossil time scale c. geographical time scale d. precambrian time scale

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other

Which of the following is not one of the mechanisms of enzyme catalysis by which the substrate is converted to the product? a. changing substrate orientation b. changing substrate reactivity c. inducing strain in the substrate d. preventing an induced fit d. preventing an induced fit

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