Mark is heterozygous. if b is for brown hair, and b is for blonde hair, what is marks phenotype?

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Video Transcript

Okay. So the answer to the question here is Marcus heterocyclic. So. Hatteras I guess means so hetero I guess means that the genes are excuse me but that we do not have a one of. So it heterosexuals. We have one of each khalil. What is an elio? And alil is considerate like a flavor of the I guess the easiest way to think about it. It's like a flavor, right? Um In the sense that like let's say the gene is ice cream, right? We take this metaphor. It's kind of a recruit metaphor. But let's go with it. So let's say a gene is ice cream in general, right? But we have different flavors of ice cream. It's all still ice cream, it's still the same gene. We just have different variations. So we have when they say heterocyclic, this means we have the same genes or set of genes. Um but they're of different alleles. So in this case right there giving us two different alleles, right? We have the same gene but the dominant genes Leads to. So that's the big capital letter, the dominant one. So this capital. So a capital letter equals dominant. So the big B. Is dominant codes for brown hair. So if you have this illegal, the big capital be illegal, you will have um brown hair. If you have the little bee. So little B. Meaning lower case means this is the recessive gene that this is recessive. This codes for blonde hair. So what does dominant versus recess I mean so if a dominant gene and the recessive gene are together now remember why this works is because we get one gene, one set of alleles from our mom and one set of leo's from her dad. So went from the mail, one from the female. Um That's why we have to write. So anytime a dominant is paired up with a recessive, the the G the phenotype is what it's called. So what is seen is the dominant characteristic? Because that is what's going to be most expressed when a dominant and a recessive are together like this big B. Little B. The color that you get isn't a mixture of brown and blood. The color that you get is just brown. Okay, because the dominant gene overwhelms the recessive gene. The only way to get blonde. In this case, if you have both have if you have both recessive genes then and only then in this case do you get blonde? Okay, of course, if you have two big beasts, then you're always going to be brown. No matter what. Even in this, if you have Big B, little B, you're still going to be brown, No matter what, If you have little B little B, then you have blond. Now remember what I said about heterosexuals, right, Heterocyclic amines one of each type Marcus hetero zegas, meaning we have one of each type Big B. Little bee. So this is what Mark is. And because of this market then has brown hair because that big B. Is dominant. So it's going to be brown. So the answer is a Mark will have brown hair. That's it.

What is the genotype for heterozygous brown hair?

What does heterozygous B mean?

What would it mean if the allele for brown is represented by B?

What is the genotype for blonde hair?