Please help, give explanation please!

1. 0 chance (0%)

2. 2 chances (50%)

3. 4 chances (100%)

Explanation:

the way a punnet square works is that you basically multiply two genes. for example:

    b   b

B Bb Bb  

b bb bb  

then, if it's uppercase, it is dominant. if it's dominant, it will take over the recessive gene. if it was Bo, B being brown and dominant, and o being recessive and orange, then brown would take over. there are also cases with codominant but that's not in the question. feel free to ask me anything about this.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.