A man heterozygous for long eyelashes marries a woman with short eyelashes. Draw a punnett square to determine the possible genotypes of their children. What is the likelihood of their child having short eyelashes?

See the attached for the Punnet square

Likelihood of their child having short eye lashes - 50% or 1/2

Explanation:

Let the allele for eye lashes be represented by E. Homozygous genotype will be EE (for long eye lashes) or ee (for short eye lashes) while heterozygous genotype will be Ee. Assuming long eye lashes allele E is dominant over shor short eye lashes e:

Heterozygous man marries a short eye lashes woman: Ee   x   ee

Ee  x  ee = Ee (long lashes), Ee (long lashes), ee (short lashes) and ee (short lashes.

That is, 50% or 1/2 of the offspring will have long eye lashes while the remaining 50% or 1/2 will have short eye lashes.

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.

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