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o blood group become higher in population because a period of time back in century, African were attacked by malaria disease n attack most of the people especially people with b antigen on their surface of blood. Due to this many innocent people dies.Although it attacked many of them but still it does not effect people with o blood group.Therefore the population of people with o blood group become higher compare to A,B and AB blood groups. It is predicted that in furute,there migth be a change in this result where the same situation can occur for people of blood group o.
What else can I help you with?
Is blood type o recessive or dominant?
O is the most recessive blood type. And RH- negative is recessive. There are a limited number of Blood Type Combinations. AA, AO, BB, BO, AB, OO. Blood Type can be determined with some certainty by using a Pundit Square. EXAMPLE AO x OO would result in First Filial Progeny of 50% AO and 50% OO. or AA x BO would result in FIrst Filial Progeny of 50% AO and 50% AB.
If and individual has one dominant allele and one recessive allele will the recessive allele show up?
No, the dominant allele will be expressed in the individual's phenotype, masking the presence of the recessive allele. The recessive allele will only be expressed if an individual inherits two copies of the recessive allele.
What is the factor that seems to disappear due to a dominant allele?
An allele is one particular form of a gene. A large population of living things typically have several different allele for any particular gene. For example, one important gene in humans determines blood type compatibility. That gene comes in 3 different alleles -- A, B, and O. Most plants and animals are diploid -- they have 2 of each gene, one inherited from each parent. For example, any one human has one of six possible genotypes for that gene: AA, BB, OO, AB, AO, BO. A recessive allele seems to disappear when paired with a dominant allele. If something has a dominant and recessive allele, the dominant will overshadow the recessive, but the recessive will still be there (just not showing). For example, the O allele is recessive when paired with the A allele, which is dominant, and so humans with the AO genotype as well as the AA genotype have "type A blood". Only humans with the OO genotype show "type O blood". According to the Wikipedia "allele" article, some people once thought that all genes had only one "normal" allele, which was both common and dominant, and all other versions of that gene (all other alleles) were rare and recessive. However, most genes have many different "normal" alleles, whose frequencies vary from one population to another. With some genes, the most common allele is recessive.
If a human baby boy inherits a recessive allele from his mother in which circumstance would he most likely show the trait coded for by the recessive allele?
A human baby boy would most likely show the trait coded for by a recessive allele if he inherits the same recessive allele from his father as well. Since males have one X and one Y chromosome, the trait would manifest if the recessive allele is on the X chromosome and there is no dominant allele present from the Y chromosome. If the mother is a carrier (heterozygous) or expresses the trait (homozygous recessive), the boy could inherit the recessive allele and exhibit the trait.
A recessive allele is represented by an letter?
In genetics, a recessive allele is typically represented by a lowercase letter. For example, if the dominant allele is represented by "A", the recessive allele for the same trait would be represented by "a".
Is recessive traits visible?
Recessive traits are only visible if an individual inherits two copies of the recessive allele, one from each parent. If an individual has only one copy of the recessive allele, the dominant allele will be expressed, masking the recessive trait.
What is a dominent allele?
A dominant allele is an allele that can take over a recessive allele, so if you have a dominant allele and a recessive allele, then the offspring will most likely have a dominant allele over a recessive allele. The dominant allele is expressed over the recessive allele.
What does the word dominant mean in genetics?
In genetics, "dominant" refers to an allele that will be expressed in the phenotype if present, masking the expression of the corresponding recessive allele. This means that even if an individual has one dominant allele and one recessive allele for a particular trait, the dominant allele's phenotype will be visible.
What is a heterozygous recessive?
Homogeneous recessive is two like genes that express a recessive trait.
Which recessive allele most often remains on the same chromosome as A?
The recessive allele that most often remains on the same chromosome as the dominant allele A is typically referred to as the "linked recessive allele." This occurs due to genetic linkage, where two genes located close together on the same chromosome tend to be inherited together during meiosis. The degree of linkage can be influenced by factors such as recombination frequency, but alleles that are physically close on a chromosome are more likely to be passed on together.
The appearance of a recessive trait in offspring of animals most probably indicates that?
both parents carry a copy of the recessive allele for that trait. This means that the offspring inherits two copies of the recessive allele, expressing the trait. If both parents were carriers of the recessive allele, there is a 25% chance of the offspring inheriting two copies and showing the trait.
What happens when an allele is dominate or recessive?
Well, a dominant allele carries dominant traits from parents to offspring. An example of a dominant trait is brown hair and brown eyes because these traits are most likely to show up on a human than a recessive allele. A recessive allele may carry a recessive trait from parents to offspring such as blonde hair and blue eyes, these are uncommon because they are recessive traits.
