Branliest if correct! thx! point mutations occur when a. one nucleotide is replaced with a different nucleotide. b. a gene's location changes. c. gametes are formed during meiosis. d. long segments of a gene are lost.

A wil be ur answer

have a goed day

option a is correct i.e.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.