Why does this recent discovery about the Galapagos finches prove that it’s often challenging for scientists to determine when two groups of individuals are separate species? What factors do scientists need to consider when determining whether a species is a new species or part of an existing species?

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

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.

Sickle cell amelia is a condition condition where the red blood cells are deformed which is affected by sickle cell amenia