Purple flowers are dominant, white flowers are recessive. We are using the letter 'Ala' for the flower color gene. What are all the possible allele combinations for a white flower?
-AA
- Aa
-аа

gas

explanation:

hdahhd

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the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

increased stability in the completion of fluorine's outer shell.

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