No only bb is recessive, Bb is heterozygous meaning the subject is a carrier of the recessive trait but exhibits the traits of a dominant carries (BB) good luck on the bio
Recessive For example, brown eyes (B) are dominant, blue eyes (b) are recessive. BB = brown Bb = brown bb = blue In the Bb genotype, the blue eyed gene is present, but the brown eyed gene is dominant, and show as the phenotype
Brown is the most common eye color. The high prevalence is explained by genetics. The gene coding for brown eye color is dominant, meaning that it most often takes precedence over other colors if it is present.
A dominant trait occurs when either both alleles are dominant or one allele is dominant and the other is recessive. This is because a dominant allele overpowers a recessive allele. In order to have a recessive trait both alleles must be recessive.
Normally a dominant allele is represented by a capital letter. It can be any letter used. Example; Brown hair is dominant and blond is recessive. B represents the dominant allele (brown) and b represents the recessive (blond) in Bb. You can have any combination of two alleles; BB, Bb, or bb. BB would have brown hair, Bb would have brown hair or a mix, and bb would have blond hair. Instead of B we could have used T or any other letter.
The expression of a recessive trait occurs when two recessive alleles recombine. I'm going to use an example for this. Let's say that blue hair is recessive, and black hair is dominant. B = Black hair b = Blue hair If you have the parents: Parent 1: Bb (Has black hair; it dominates blue hair... but is a carrier of the blue hair gene.) Parent 2: bb (Has blue hair; only recessive genes are present) If you use a punnet square, They have four possible combinations of kids: Kid 1: Bb (Black haired; is a carrier of blue hair) Kid 2: Bb (Black haired; is a carrier) Kid 3: Bb (Black haired; is a carrier) Kid 4: bb (Blue haired) These "carriers" are able to have a chance of producing a child with the same recessive gene, whether it be displayed or just carried. It's very confusing, but simple once you get the hang of it. :3
if the ratio had more recessive traits, like if you made a punnit square and you saw that there were more of the recessive traits (BB bb bb bb) then you know that the most common trait is the recessive one "bb" (considered as homozygous recessive ( i think))
No, homozygous recessive indivuals MUST have two of the reccessive gene (bb), the possible combinations are bb,bb,bb,bb thus only a recessive trait is possible
The 3 forms of a gene (called alleles) are:Dominant-dominant Ex.(BB)Dominant-recessive Ex.(Bb)Recessive-recessive Ex.(bb)
B is dominant and b is recessive.
Yes .. Blue eye color is a recessive allele. So hence when two homozygous recesive alleles are paired, then the succesive generation will also have homozygous recessive alleles.. Like in this case : Father - bb Mother - bb Children - bb,bb,bb,bb So its 100% homozygous recessive.. :)
The chance of a particular trait being inherited. For each trait there are several alleles, some are dominant and others recessive, for example brown eyes are dominant over blue. The recessive phenotype can only have a genotype with both recessive alleles eg. bb The dominant phenotype can have a genotype with both dominant alleles eg. BB or one of each eg. Bb A punnet square shows the likelihood of a phenotype being inherited from given genotypes, alleles etc... BB and Bb makes BB BB Bb Bb All offspring will have the dominant phenotype (BB or Bb) eg. brown eyes Bb and Bb makes BB Bb Bb bb One in four of the offspring will have the recessive phenotype (bb) eg. blue eyes
An organism with the alleles BB would be homozygous dominant.
Recessive For example, brown eyes (B) are dominant, blue eyes (b) are recessive. BB = brown Bb = brown bb = blue In the Bb genotype, the blue eyed gene is present, but the brown eyed gene is dominant, and show as the phenotype
Brown is the most common eye color. The high prevalence is explained by genetics. The gene coding for brown eye color is dominant, meaning that it most often takes precedence over other colors if it is present.
To express the recessive gene, the baby bird must have bb. Since the one parent is bb, they will always pass the recessive b. The other parent is Bb, so they have a 50% chance of each. Therefore the child has a 50% chance of Bb and a 50% chance of bb. BB is impossible. Therefore the baby bird has a 50% chance of having pink feathers.
A dominant trait occurs when either both alleles are dominant or one allele is dominant and the other is recessive. This is because a dominant allele overpowers a recessive allele. In order to have a recessive trait both alleles must be recessive.
yes, if the man with brown eyes had a recessive blue trait. his parents would have to both have the recessive trait as well. the parents with dominate brown (B) with recessive blue (b) eye color traits would create a chart of possible outcomes for their child: B b B bb Bb b Bb bb if the man came out Bb (dominate brown with recessive blue) and had a wife with bb (the only way to have blue eyes is to have two recessive blue traits because if a pair of traits has a Brown then the brwn color will automatically dominate over the blue) the man and the wife will make an eye color chart like this: B b b Bb bb b Bb bb there is a 50/50 chance the child will have blue eyes. if the child has the bb trait then it will have blue eyes.