What would it mean if the allele for black eyes is represented as B?

What is the allele for black eyes?

So the male parents genotype is “Bb” (B = allele for black eye, b = allele for red eye). The female parent has red eyes, there is only one way to have this recessive phenotype, so she must to be homozygous recessive. Homozygous recessive means that her genotype must be “bb”.

What does it mean when the allele for brown hair is represented as B?

With eye color, for instance, “B” stands for a brown allele and “b” stands for a blue allele. An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype.

What is A and B allele?

“The B-Allele Frequency is a normalized measure of the allelic intensity ratio of two alleles (A and B), such that a BAF of 1 or 0 indicates the complete absence of one of the two alleles (e.g. AA or BB), and a BAF of 0.5 indicates the equal presence of both alleles (e.g. AB).”

What is meant by an allele?

An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. … Genotypes are described as homozygous if there are two identical alleles at a particular locus and as heterozygous if the two alleles differ.

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What does recessive allele mean?

Definition. A type of allele that when present on its own will not affect the individual. Two copies of the allele need to be present for the phenotype to be expressed.

Can O Positive and B Positive make a positive?

If a baby’s mother has an O positive blood type and a man has B positive blood type, it is possible for that man to be the baby’s father if the child has O type blood or B type blood (either positive or negative). So, in short, yes, it is possible for him to be the father.

Can AB and B produce O?

If one parent has A and another has AB, they can either produce a child with A, B or AB blood types. If one parent has A and another has O, they can either produce a child with A or O blood types.

ABO Blood Type Calculator.

Genotype (DNA) Blood Type
AB AB blood type
BO or BB B blood type
OO O blood type