Lab stations activity: investigating complex inheritance patterns

Mendel's laws only apply to some restricted hereditary situations, that is, to those traits that are determined by a single pair of allele genes and that are found on different homologous chromosomes. Among the hereditary mechanisms that do not conform to the laws described by Mendel, the complex inheritance patterns can be mentioned: intermediate inheritance, codominance, multiple alleles and inheritance linked to sex.

Explanation:

Inheritance has patterns of transmission from parents to children such as those governed by Mendel's laws known as Mendelian inheritance, however, there are other inherited patterns known as complex inheritance patterns, among which are intermediate inheritance, codominance, multiple alleles and inheritance linked to sex. An inherited trait with an intermediate inheritance pattern expresses the two alleles that the individual possesses, but neither of them is observed as it originally is, but rather an intermediate phenotype is seen. Codominance is a situation that occurs when two different alleles are found in the genotype and both are expressed. Multiple alleles or polyalelia occur when genes have more than two allelic forms. In the case of multiple alleles, three or more alleles are present to determine a population trait. Sex-linked inheritance refers to the transmission and expression, in different sexes, of genes that are found in the non-homologous (heterologous) sector of the X chromosome inherited from the father. Two known examples are: hemophilia and color blindness determined by recessive genes in both cases.

this happened on tam airlines.

a 50-something year old white woman arrived at her seat and saw that the passenger next to her was a black man.

visibly furious, she called the air hostess.”what’s the problem, ma? ” the hostess asked her

“can’t you see? ” the lady said – “i was given a seat next to a black man. i can’t seat here next to him. you have to change my seat”

– “, calm down, ma” – said the hostess

“unfortunately, all the seats are occupied, but i’m still going to check if we have any.”

the hostess left and returned some minutes later.

“madam, as i told you, there isn’t any empty seat in this class- economy class.

but i spoke to the captain and he confirmed that there isn’t any empty seats in the economy class. we only have seats in the first class.”

and before the woman said anything, the hostess continued

“look, it is unusual for our company to allow a passenger from the economy class change to the first class.

however, given the circumstances, the commandant thinks that it would be a scandal to make a passenger travel sat next to an unpleasant person.”

and turning to the black man, the hostess said:

“which means, sir, if you would be so nice to pack your handbag, we have reserved you a seat in the first class…”

and all the passengers nearby, who were shocked to see the scene started applauding, some standing on their feet.”

explanation:

recognizing subtle discrimination means understanding unconscious bias. many times, unconscious bias motivates subtle discrimination against coworkers, bosses, and clients, which in turn can become illegal negative employment action. sometimes, people are unaware of the fact that they are discriminating.