20. The expression of variation in an organism depends on a. Solely the environment
b. Solely the heritable traits of an organism
c. Both the environment and heritable traits of an organism
d. Neither the environment and heritable traits, but the non-heritable
characteristics of organism

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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genetic variation will increase because of a new habitat and food source.

explanation: