davialashay2458
18.11.2020 •
Biology
Jill is planting a garden in her yard and notices that the fertilizer she is using contains gypsum. She leams that gypsum is a rock that is mined from underground and used to make fertilizer and other products. She remembers from science class that gypsum is rated a 2 on Moh's hardness scale. Which of these statements describes this rock? Choose the two that apply.
A. It cannot scratch any other rocks.
B. It can scratch rocks that are rated a 1
C. It is very soft compared to other rocks.
D. It is very hard compared to other rocks. E. It can scratch any rock rated from a 2 to a 10, but not a 1.
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Ответ:
two alleles
Explanation:
Mendelian inheritance refers to the inheritance of traits controlled by a single gene with two alleles, one of which may be dominant to the other. Not many human traits are controlled by a single gene with two alleles, but they are a good starting point for understanding human heredity