A mating between a true breeding red, long-stamen plant with a true breeding white, short-stamen plant yields a red, long F1. This F1 is self-fertilized to produce an F2 generation that has 875 red long-stamen plants, 295 red short-stamen plants, 315 white long-stamen plants, and 100 white short-stamen plants. What can you conclude? 1. The genes are tightly linked. 2. The genes are not tightly linked or maybe even located on a separate chromosome. 3. That the genes were so tightly linked that no observable crossover events between the genes occurred.

2. The genes are not tightly linked or maybe even located on a separate chromosome.

Explanation:

This question can be explained with the concepts advocated by Mendel in the law known as the law of segregation (or Mendel's second law). This law explains that the crossing between a dominant homozygous organism and a recessive homozygous organism (a true long-stemmed red plant with a real short-stemmed white plant) generates a totally heterozygous offspring, called F1. This is defended by Mendel's first law.

However, in Mendel's second law, we can see that the genes are not closely linked or maybe even located on a separate chromosome. This is because when crosses between F1 organisms occur, the offspring have a very wide variety of combinations of alleles and phenotypes, which would not occur if the genes were linked. This indicates that genes are inherited independently, because they are not linked and are sometimes on different chromosomes.

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.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.