Ao realizar seus experimentos com ervilhas, Mendel cruzou plantas com sementes amarelas e verdes, obtendo, em F1, 100% das plantas com sementes amarelas. Em F2, obteve 75% das plantas com sementes amarelas e 25% de plantas com sementes verdes. Podemos concluir, portanto, que em F1 temos indivíduos

É 100% semelhante ao pai i. e. sementes de cor amarela.

Explicação:

Na F1, 100% das plantas com sementes amarelas. Podemos concluir, portanto, que na F1 temos indivíduos idênticos aos pais porque é 100% semelhante ao pai i masculino. e. sementes de cor amarela. neste experimento, as plantas com sementes amarelas possuem alelo dominante em comparação às plantas com sementes verdes que possuem alelo recessivo, então é por isso que as plantas com sementes amarelas aparecem na geração F1.

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)

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.