An organism with two dominant allele
What type of phenotype is BB?
Phenotype. 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.
Is the allele pairing BB considered homozygous or heterozygous?
An organism with two dominant allele
How do you know if you are homozygous or heterozygous?
If an organism has identical genes on both chromosomes, it is said to be
homozygous
. If the organism has two different alleles of the gene it is said to be heterozygous.
What do the alleles BB mean to geneticists?
What does the notation Bb mean to geneticists?
One dominant and one recessive allele
.
A number that describes how likely it is that an event will occur
.
What is an example of heterozygous?
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.
Is BB homozygous dominant?
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. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype.
Are blue eyes heterozygous or homozygous?
We all have two alleles, or versions, of each gene. Being homozygous for a particular gene means you inherited two identical versions. It's the opposite of a heterozygous genotype, where the alleles are different. People who have recessive traits, like blue eyes or red hair,
are always homozygous for that gene
.
Are females heterozygous or homozygous?
So a
female can be considered homozygous or heterozygous
about a specific trait on the X chromosome. Men are a little more confusing. They inherit two different sex chromosomes: X and Y. Because these two chromosomes are different, the terms “homozygous” and “heterozygous” don't apply to these two chromosomes on men.
What is heterozygous trait?
Heterozygous refers
to having inherited different forms of a particular gene from each parent
. A heterozygous genotype stands in contrast to a homozygous genotype, where an individual inherits identical forms of a particular gene from each parent.
Is heterozygous dominant or recessive?
When you're heterozygous for a specific gene, it means you have two different versions of that gene.
The dominant form can completely mask the recessive one
, or they can blend together. In some cases, both versions appear at the same time.
Are green or blue eyes more dominant?
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. … However, if one parent has green eyes and the other blue, your child will most likely have green eyes, as
green is dominant over blue
.
What is a heterozygous mutation?
A mutation affecting only one allele
is called heterozygous. A homozygous mutation is the presence of the identical mutation on both alleles of a specific gene. However, when both alleles of a gene harbor mutations, but the mutations are different, these mutations are called compound heterozygous
Is AA heterozygous or homozygous?
Two dominant allele
What is heterozygous recessive example?
One such example is brown eyes (which is dominant) and
blue eyes
(which is recessive). If the alleles are heterozygous, the dominant allele would express itself over the recessive allele, resulting in brown eyes.
Can two brown eyed parents have a blue eyed child?
Brown (and sometimes green) is considered dominant. So a brown-eyed person may carry both a brown version and a non-brown version of the gene, and either copy may be passed to his children. Two brown-eyed parents
(if both are heterozygous) can have a blue-eyed baby
.
