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3 . In humans brown eyes are dominant to blue: Both parents of a blue-eyed man have brown eyes: The blue- -eyed man, Omar; marries a brown-eyed womAI; Cleopatra; wh...

Question

3 . In humans brown eyes are dominant to blue: Both parents of a blue-eyed man have brown eyes: The blue- -eyed man, Omar; marries a brown-eyed womAI; Cleopatra; whose mother had brown eyes and whose father had blue eyes Cleopatra has a brother who has blue eyes_ Omar and Cleopatra and have a blue-eyed children Give the genotypes of all individuals described.

3 . In humans brown eyes are dominant to blue: Both parents of a blue-eyed man have brown eyes: The blue- -eyed man, Omar; marries a brown-eyed womAI; Cleopatra; whose mother had brown eyes and whose father had blue eyes Cleopatra has a brother who has blue eyes_ Omar and Cleopatra and have a blue-eyed children Give the genotypes of all individuals described.



Answers

Each of two parents has the genotype brown/blue, which consists of the pair of alleles that determine eye color, and each parent contributes one of those alleles to a child. Assume that if the child has at least one brown allele, that color will dominate and the eyes will be brown. (The actual determination of eye color is somewhat more complicated.) a. List the different possible outcomes. Assume that these outcomes are equally likely. b. What is the probability that a child of these parents will have the blue/blue genotype? c. What is the probability that the child will have brown eyes?

Based on the information provided we know that I color is autism all and that if the Gina type with a Capital B is present, that person will have brown eyes. And if you have homes like this recessive condition, then that person will have blue eyes. Colorblindness is a little bit different because this is an excellent trait, so males can have two possible uh, Gino Tippett combinations, one where the Leo on the X is dominant and that will be normal for color for color site and then x little A. Why this male would be color blind Females are a little different because there's three possibilities. X a x a would be normal. This female ex big a X little a would be normal, but she's a carrier for color blindness and X little a X little a. This would be a color blind female. So for the first part of the question, it asked us to determine the Gandhi. It's possible from a mail who is headers, I guess, for brown eyes. So that would be big B little baby animal pit mail out here and he's color blind so we could look at our choice our chart we made when we know that his genotype is this, This is the Leo tells us, or this Genotype tells us he has brown eyes and this tells us he's colored white. His possible gang mates are easy to determine because you just take this be and you pair it with each of the possible, um, sex chromosomes. And then you do the same thing with this little B. And so you're gonna have four possible gam eats from this brown live color brought blind male. So big b ATS little a big B. Why little bee? It's little A and little B. Why now? The second part of the question was asked about Gina types for various family members. And so we have a mom, this female here's blue eyed, so she has to little bee's and she has normal vision. We can't jump to too many conclusions because, really, we don't have enough information just yet to answer what this second Khalil is because that diversity is hidden. So it could be that it's this big A or it could be that it's this little a. But some of the facts start to come together. The first fact is that she has a brown eyes color blind son So brown night color, blind son. So that tells us that he has a big B and a little baby from her. And he has and ETS that has the little A from her and the UAE from Dad. And so this question mark, we can now replace with a little A because we determined that she must be a carrier. Four color blindness because she had a son that has the color blind. A legal. She also has a daughter. Yes, has blue eyes so to little bee's and she's color blind. So that means she got one X with the color blind a little from mom and one next with the color blind. A Leo from Dad. That also means that bombs Gina type must be little be little B X, big a X, little a and that dance Gina type Must be, uh ah hitters. I get brown night mail that has that is color blind

All right, So for this problem, we're talking about two parents having both brown, blue in their genes. We're talking about eye color. And so we have to kind of make it and the browns the dominant. But so if you get brown in your situation, you're going to have brown eyes essentially. So here you're going to have brown brown, here, you have brown, blue, blue, brown, and then blue blue. So those are our that's our sample set that answers part A. You can list those out if you need to. And then for part B, it asks us for the probability of them having blue eyes. Only one out of the four have blue eyes as a possibility. Then leaving us the probability of them having brown Would have to be the rest of it. 3/4 because they're even though there's a blue here in a blue here, Brown is considered the dominant. And so that's what's gonna win. So 3/4 is are finally

Let us look at this question. List the different possible outcomes. Assume that these outcomes are equally likely. Okay, there are two A leaders in a child. Each parent contributes one of these a levels. They are either brown or blue, and we have to assume that the child has at least one brown a limb. The color will dominate and the eyes would be brown. The first one is list the different possible outcomes one of the different possible outcomes. And what is the sample space? It is brown brown. It can be brown brown. It can be brown blue. It can be blue brown. Or it can be blue blue moving on. What is the probability that a child off these parents will have a blue blue genital blue blue? There's only one favorable outcome, and there are four possible outcomes. So one out of four, which means one by four. Let me like this here B. This means one by four is the probability, or the probability is 0.25 That the child will have a blue blue genotype. What is the problem? The child that the child will have brown eyes? Well, if there is even a single brown lil. The child is going to have brown eyes. So in three cases out of four, the child gets brown elite. So the probability that the child has brown eyes is three by four. Well, this is nothing but 0.75 These are my answers.

All right. So this questions asking if a person has one Jane influencing blue eyes but actually has brown eyes. Blue eyes must be a blank trait. A dominant, be recessive see sex link or deep holly genic. So this question obviously gets at your understanding of genetics and genetics plays a big a big role in studying developmental psychology because it really follows how poster in trades, whether they be biological or psychological, may be passed down from parents to offspring. So the way I'm gonna purchase question, it's just to go by all the options we have. And I'm used a process of elimination. So the first thing this except to me and probably be being the easily too easy us to explain It's sex linked and a sex thing. Trade Trade is basically a trait that, um, is more influence, obviously by the sex of an individual. And, for example, if a mother has a why, um has ah, um, the trade of color blindness on the X chromosome. Um, she is more likely gonna pass that on to her son because the father will only contribute Oh, on the Y chromosome. I'm sorry if I rested up. The mother is going to contribute by the X chromosome, and the father is gonna contribute by the Y chromosome. So if the color blinded trade on the X chromosome is passed down to the individual with X and Y chromosomes chromosomes making that a male that their son is more likely tohave colorblindness rather than their daughter because a daughter will have to we'll have an X X chromosome because she is a female. So in that way, traits are sex linked because of being passed down from mothers two sons, and they're more likely to be expressed. So just to put, um, about into simple words to remember, I like to disturb it by traits, although or are influence by sex and going back to the question it saying that if a person has one gene influencing blue eyes but actually has brown eyes, lies must be so the question doesn't really or actually doesn't at all mention any sort of sex involved, so C can be eliminated by below that we have Polly genic and poorly done. It is probably one of your least known terms when talking about genetics and studying psychology, but it's really easy to break it down. Police linguistically, we know that Polly means many the root word that means many. And genic basically refers to the genes of what Polly genic really means is many genes. And how this helps me remember that is that apologetic refers to how trades our influence gonna really that by many genes. So that's to say that not one trait is coated by one single gene. So if the question was phrased in that, um, if a person has many genes influencing blue eyes, that blue eyes must be apologetic. Trade. However, this question is only saying that one gene is influencing blue eyes. So because of that, we can also eliminate Paula genic, leaving us with dominant and recessive, which is probably, um, what you really remember when you're talking about genetics. And this is kind of like the big um opposing forces on talking about singular jeans. And just as their terms suggests, a dominant gene refers to a gene that's always going to be expressed so always expressed. Prince being dominant and the recessive is basically the opposite of that, and it will only be expressed when paired with an identical gene So Onley express when paired identical e. So going back to the question, we see that a person has a gene that has that influences blue eyes that actually has brown eyes. So you could think of the brown eyes as being the dominant, the dominant trait because it's what's expressed despite this person. Having a gene that influences blue eyes and brown eyes are a dominant trait that makes blue eyes the recessive trait, making be the correct answer.


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