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O alelo recessivo é uma forma alternativa de um gene que não se manifesta quando um alelo dominante está presente. Em termos genéticos, os organismos têm duas cópias de cada gene, uma herdada de cada progenitor. Essas cópias podem ser diferentes (heterozigotas) ou iguais (homozigotas).
Um alelo recessivo só se expressa fenotipicamente (ou seja, aparece no organismo) se um indivíduo possui dois alelos recessivos para um determinado gene. Por exemplo, se considerarmos a cor dos olhos, se o alelo para olhos castanhos (dominante) for presente junto com um alelo para olhos azuis (recessivo), a cor dos olhos da pessoa será castanha, já que o alelo dominante prevalece.
Resumidamente, o alelo recessivo se manifesta de forma visível apenas na presença de dois alelos recessivos, enquanto um alelo dominante pode mascarar a sua expressão. Essa dinâmica está na base de muitos padrões hereditários e é fundamental para a compreensão da genética.
What else can I help you with?
What is The general term for an allele that masks the presence of another allele in the phenotype?
The general term for an allele that masks the presence of another allele in the phenotype is "dominant." Dominant alleles are expressed phenotypically when present, masking the effects of recessive alleles.
What does the symbol Tt mean to a geneticist?
at least one dominant allele: The answer above ^ is WRONG: The notation TT means that the chromosomes that carry alleles for a certain characteristics both have a dominant gene,which means TT is a two dominant alleles because each T is one dominant allele. SHORTER IS: 2 DOMINANT ALLELES.
A phenotypic trait that results from a single dominant allele is?
polydactyly Because it has to do with the frequency of the allele for 6 digits. Although this is dominant, its occurance is much lower than the ressesive 5 fingers. I think Natural selection plays a part in this phalangeal paradox. Maybe the ones with 6 fingers could not buy gloves in the winter so they froze to death,...
What is allele masked by the dominant allele?
An allele that is masked by the dominant allele is called a recessive allele. When an individual has one dominant allele and one recessive allele, only the trait determined by the dominant allele will be expressed. The recessive allele will only be expressed if an individual has two copies of it (homozygous recessive).
Allele that prevents the expression of a recessive allele?
A dominant allele
Is the lower case letter in a punnet square a ressesive allele?
By convention yes.
If an allele for a particular trait is not expressed at all when another allele for the trait is present the allele is?
The allele not expressed would be recessive whilst the other is dominant. This would be the case in a heterozygous genotype. Hope this helps
What is The general term for an allele that masks the presence of another allele in the phenotype?
The general term for an allele that masks the presence of another allele in the phenotype is "dominant." Dominant alleles are expressed phenotypically when present, masking the effects of recessive alleles.
What is an allie that is covered up or hidden?
If you mean allele, then the answer is a recessive allele. A recessive allele is dominated by a dominant allele, and generally does not show up physically.
What is a type of gene?
Do you mean allele? An allele is a different molecular form of the same gene.
Is canavan disease dominant or recessive?
its ressesive
What does the symbol Tt mean to a geneticist?
at least one dominant allele: The answer above ^ is WRONG: The notation TT means that the chromosomes that carry alleles for a certain characteristics both have a dominant gene,which means TT is a two dominant alleles because each T is one dominant allele. SHORTER IS: 2 DOMINANT ALLELES.
A phenotypic trait that results from a single dominant allele is?
polydactyly Because it has to do with the frequency of the allele for 6 digits. Although this is dominant, its occurance is much lower than the ressesive 5 fingers. I think Natural selection plays a part in this phalangeal paradox. Maybe the ones with 6 fingers could not buy gloves in the winter so they froze to death,...
Is breast cancer a dominant or ressesive disorder?
ressevive
What is ressive?
dominate is you strong trait, and ressesive is your weak trait
What type of gene produce a miniature breed of a dog?
ressesive
What type of genes produce miniature breed of dog?
ressesive
