Imagine that human hair color is determined by a single gene, and that brown hair (b) is dominant over blond hair (b). a male with brown hair mates with a blond female. they give birth to two brown-haired children and one blond-haired child. using representations, show how the alleles of the parents could be distributed by the process of meiosis to gametes and how the gametes came together to generate each of the children. giving points

Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).