Which of the following is true about genes? a. the genes of a particular organism can never change throughout its lifetime. b. genes are responsible for all the traits of an organism. c. genes are made up of smaller molecules known as chromosomes. d. in humans, genes are passed to an offspring from two parents.

the answer is In humans, genes are passed to an offspring from two parents. if it is for study island

Explanation:

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answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.