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How would you write an allele that is heterozygous?
Representing heterozygote allele characteristics depends on the nature of the heterozygote.If one of the alleles is dominant, and the other recessive, the genotype is written as Aa - where the capital letter (A) represents the dominant allele, and the lower case letter (a) represents the recessive allele. The dominant (upper case) allele is always written first.However, the genotype cannot be written in this way if both alleles are codominant (neither one is dominant or recessive). In this case, the convention is to choose a letter to refer to the flower-color-locus as a whole. You would then add different superscript letters to denote the different alleles.For example, you could choose the letter A to refer to the flower-color-locus, and then choose C and D as the two co-dominant alleles. This genotype would be written as ACAD.
What happens when a dominant and recessive allele are both present?
The resulting offspring will have the dominant trait. It depends on if the dominant is hetero or homo...if it was homozygous then your offspring will have a hetozygous trait showing the dominant trait (to clear this up if you are confused lets say we are talking about brown eyes(BB-dominant) vs blue eyes(bb-recessive)--a homozygous would give you a brown eyed child with Bb and but if the person is heterozygous Bb and gets with a recessive you have a chance of getting Bb or bb giving you a possibility of a brown or blue eyed child)...wow i just made that way more confusing than it had to be
What is the difference between a dominant and recessive allele?
Dominant is an allele that can be expressed in a heterozygous individual (ie. Bb) or homozygous dominant (ie. BB). Recessive on other hand are traits that will only be expressed in a homozygous recessive (ie. bb) condition. Under normal circumstances, dominant alleles are the ones expressed in the phenotype, while the recessive allele is not. For example (an extremely simplified example) an heterozygous individual for eye color. (genotype Bb), has one dominant allele, 'B', and one recessive allele, 'b'. Given that B is for brown eyes, and b is for blue eyes, that individual's phenotype would be expressed as brown eyes (and be recessive for blue eyes). Organisms receive one allele for each trait from each parent, thus you have two alleles for each trait.
What is the phenotype of a homozygous dominant person?
Homozygous dominant- means having dominant alleles at the same locus on a chromosome.More correctly, it's the same locus on two chromosomes (a homologous pair).
What is an example of two heterozygous parents?
The possible genotypes of parents who are heterozygous would be found using a punnet square. The outcome would be 50 percent heterozygous dominant, 25 percent homozygous dominant, and 25 percent homozygous recessive.
Is the BB genotype heterozygous or homozygous?
Heterozygous
What word describes an organism that has the genotype Bb?
The most accurate description of an organism with genotype AaBb is heterozygous. A homozygous genotype is aaBB and AA.
A hetrozygous genotype is when the alleles present are?
Different, such as Bb.
In genes what does BB Bb and bb mean?
In genetics, BB represents a homozygous dominant genotype, where both alleles are dominant. Bb represents a heterozygous genotype, where one allele is dominant and one is recessive. bb represents a homozygous recessive genotype, where both alleles are recessive.
What is meant by a heterozygous genotype?
It means the individual has two different alleles for a trait, for example; Aa, Tt, Bb, etc.
What is homozygous and heterozygous genotypes and the notation used to express them?
Homozygous or heterozygous are terms used to describe the genotype of a diploid organism at a locus of the DNA. Homozygous means that the organism has the same two alleles at that locus denoted by AA for dominant alleles or AA for recessive. Heterozygous means that the organism has two different alleles at that locus and is denoted Aa.
Diffrence between homozygous and heterozygous?
They refer to the alleles in a genotype. For the basics of genetics, we can say that each allele is either dominant or recessive. Dominant is represented by an uppercase letter, and recessive a lowercase. If the genotype is AA, it is homozygous dominant. If it is aa it is homozygous recessive. If it is Aa, it is heterozygous. Simply, homozygous means that both of the alleles are the same and heterozygous means it has one of each allele.
What is the difference between a homozygous individual and a heterozygous individual?
In genetics, homozygous genes are identical alleles, while heterozygous genes have different alleles. For example, TT(same alleles) is homozygous genotype, while Tt (different alleles) is a heterozygous genotype.
If an individual has the genotype Bb what alleles can it pass on?
An individual with the genotype Bb can pass on either a B allele or a b allele to their offspring. This is because they have one copy of each allele (B and b) and can pass on either one to their offspring during reproduction.
Are organisms with alleles BB recessive or dominant?
Organisms with alleles BB are considered homozygous dominant. This means that the dominant allele (B) is expressed in the phenotype. Dominant alleles mask the effects of recessive alleles in heterozygous individuals.
Differentiate between homozygous and heterozygous?
Homozygous refers to having two identical alleles of a particular gene, while heterozygous refers to having two different alleles of a particular gene. In homozygous individuals, both alleles are the same (e.g., AA or aa), while in heterozygous individuals, the alleles are different (e.g., Aa).
How do you describe homozygous and heterozygous individuals?
Homozygous is a term used to describe an organism that has two of the same alleles for a trait. If a person's alleles for eye color are BB (dominant dominant) or bb (recessive recessive), they are homozygous.
