Offspring receive how many alleles from each parent?

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a

The picture shows a location in india that is very dry and arid. notice the tall mountains in the background; you can find high amounts of vegetation on the other side of the mountains. which statement is most likely true for this area?

What if the yeast were extremely active and produced more than 100ml gas. would you know? why/why not