Imagine you are looking out at a field of flowers. 774 plants have red flowers; 226 plants have white flowers. based on mendel's work, what can you say about the genotypes of the parents of this field of flowers?
a) the parents are heterozygous for flower color.
b) the parents are homozygous dominant for flower color.
c) the parents are homozygous recessive for flower color.
d) you cannot determine anything about the parents without seeing them.

The most appropriate answer would be A) The parents are heterozygous for flower color.  

The ratio of the red and white flower plants is approximately equaled to 3:1.

Thus, the phenotype ratio is 3:1.

In Mendelian cross, this ratio is obtained only when both the parents are heterozygous for the character.

For example, the cross of Rr and Rr would produce the offspring with three types of genotype in the ratio 1:2:1.

The phenotype ratio would be 3 (red):1 (white).

c

explanation:

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.