Why are no squares half shaded (carriers)

I think coz they do not exhibit the trait because it is recessive, but they could pass it on to their offspring if their partner is also a heterozygote.

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

i hope this you