In the 1800s, the austrian monk gregor mendel used pea plants to study patterns of heredity. he observed that traits were inherited in certain, repeating ratios. which of the following hypotheses did mendel form as a result of his observations?
a. organisms can inherit up to four copies of a gene for each trait.
b. organisms always display the same traits displayed by its parents.
c. organisms inherit two copies of a gene for each trait, one from each parent. d. organisms only inherit one copy of a gene for each trait.

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.