6. In Numbats, yellow bellies (Y) are dominant over green bellies (y).
a) Complete a Punnett square to show a cross between purebred vellow-bellied numbat
and a numbat that is hybrid for belly colour. What is the probability that the parents will
have yellow-bellied offspring?

b) Is it possible for two yellow-bellied numbats to have a green-bellied child? Identify the
genotypes of the parents and complete the cross on the Punnett square.
Genotypes of the parents:
and
If yes, explain how and identify what the probability would be.

The probability of the parents having yellow-bellied off-spring is 100% because all the genotypes have a dominant Y.

It is possible for two yellow-bellied numbats to have a green bellied child if they are both hybrid Yy. The probability of the parents to have a green-bellied child is 25%

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.