In goats, a beard is produced by an autosomal allele that is dominant in males and recessive in females. In this question, the symbol B will be used for the bearded allele and B* will be used for the beardless allele. Another independently assorting autosomal allele that produces a black coat (W) is dominant to the allele for white coat (w). Answer the following questions
relating to the crosses below:
B*Bb ww male x Bbgb ww female
What proportion of males are bearded and black?
What proportion of females are bearded and black?
B*Bb Ww male x B BbWw female
What proportion of males are bearded and black?
What proportion of females are bearded and black?

In the context of the neural impulse, which of the following is true about the depolarization of neuron membranes?

Match the descriptions / definitions with the term they best describe 1. three dimensional relationship of the different polypeptide chains in a multisubunit protein or protein complex 2. common folding pattern in proteins in which a linear sequence of amino acids folds into a right-handed coil stabilized by internal hydrogen-bonding between polypeptide backbone atoms. 3. the amino acid sequence of a protein 4. a region on the surface of a protein that can interact with another molecule through noncovalent bonding. 5. three-dimensional arrangement of alpha-helices and beta-sheets within a single polypeptide, typically stabilized by a variety of noncovalent bonds, including ionic and hydrogen bonds, and nonpolar interactions / hydrophobic force. 6. the chain of repeating carbon and nitrogen atoms, linked by peptide bonds, in a protein. 7. common structural motif in proteins in which different sections of the polypeptide chain run alongside each other and are joined together by hydrogen bonding between atoms of the polypeptide backbone. 8. portion of a polypeptide chain that has a discrete tertiary structure of its own and can often fold independently of the rest of the chain 9. regular local folding patterns in a protein, including alpha-helix and beta-sheet a. primary structure b. beta-sheet c. protein d. coiled-coil e. polypeptide backbone f. secondary structure g. side chain h. tertiary structure i. binding site j. alpha-helix k. quaternary structure l. protein domain

What two fields of study provide the core information that is used to classify organisms?