Two characteristics of tyrosinase

Tyrosinase, an oxidase that is the rate-limiting enzyme for controlling the production of melanins is mainly involved in two distinct reactions of melanin synthesis: (1) the hydroxylation of a monophenol, and (2) the conversion of an o-diphenol to the corresponding o-quinone. o-quinone undergoes several reactions to... Tyrosinase. An enzyme involved with melanin synthesis, which gives the skin its color and also involved with browning of fruits, tubers, and fungi that have been damaged.

Tyrosinase is responsible for the first step in melanin production. It converts a protein building block (amino acid) called tyrosine to another compound called dopaquinone.

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c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.