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. Using the eye color example, this genotype is written BB.
Is BB brown eyes?
Geneticists represent the different versions of the eye colour gene as B for brown and b for blue (the capital letter is the dominant, the lowercase, recessive). So brown eyes are either Bb or BB and blue eyes are bb.
What is your genotype If you have brown eyes?
The way geneticists represent these two different versions of this eye color gene are B for brown and b for blue (the capital letter is always the dominant, the lowercase, the recessive). So you will have brown eyes with either BB or Bb and blue eyes with bb.
Is BB An example of genotype or phenotype?
Genotype is the genetic makeup of an individual eg Bb. Phenotype is the physical appearance eg brown hair.
Is phenotype BB or BB?
The physical appearance of the genotype is called the phenotype. For example, children with the genotypes ‘BB’ and ‘Bb’ have brown-eye phenotypes, whereas a child with two blue-eye alleles and the genotype ‘bb’ has blue eyes and a blue-eye phenotype.
What is genotype example?
A gene encodes eye color. … If the child inherits two different alleles (heterozygous) then they will have brown eyes. For the child to have blue eyes, they must be homozygous for the blue eye allele.
What genotype is hazel eyes?
Each human has two genes for eye color – one Brown/Blue and one Green/Hazel. Brown is dominant over all other alleles. Green and hazel have incomplete dominance. The heterozygous allele combination Gg produces hazel eyes.
Are brown eyes dominant to green eyes?
The allele genes come in the form of brown, blue, or green, with brown being dominant, followed by green, and blue being the least dominant or what is called recessive. Given this information, you can determine what eye colors are dominant in the parents.
Can 2 blue eyes make brown?
Eye color is not an example of a simple genetic trait, and blue eyes are not determined by a recessive allele at one gene. Instead, eye color is determined by variation at several different genes and the interactions between them, and this makes it possible for two blue-eyed parents to have brown-eyed children.
Can brown eyes and blue eyes make green?
First, the answer is yes to both questions: two blue-eyed parents can produce green or brown-eyed children.
Which genotype is BB?
An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive. In the eye color example, this genotype is written bb.
What are 5 examples of genotypes?
Examples of Genotype:
- Height. For an individual’s gene makeup there is tall variety (T) and there is short variety (s). T and s are called the alleles. …
- Freckles or no freckles. Again the information that is passed from parent to child is carried in the cell of the genotype. …
- Lactose intolerance.
Is BB heterozygous or homozygous?
An individual that contains two copies of the same allele for a specific gene is homozygous. An individual that contains two different alleles of a gene is heterozygous. A cow that has two alleles for a red coat is homozygous (bb). A bull with two alleles for a black coat is homozygous (BB).
What is BB in Punnett Square?
BB is called homozygous dominant. Both genes are the same and dominant. The dominant trait is expressed. Bb is called heterozygous. The organism has a dominant gene and a recessive gene.
What is heterozygous example?
If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair. The relationship between the two alleles affects which traits are expressed.
What is the genotype of the heterozygote?
Listen to pronunciation. (HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).