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A recessive phenotype can only be observed when the individual carries both the recessive alleles for the specific trait.
Individual alleles control the inheritance of traits. Some alleles are dominant, while others recessive.
Nope, the alleles for smile dimples are actually dominant, not recessive.
These traits are called dominant traits. They will overcome the recessive gene and the dominant trait will be expressed. A recessive gene needs two alleles present in its genotype to be expressed.
recessive alleles are the ones with small letters, for example in Rr, the recessive is the r.
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Recessive trait...
I think albinism still exists I have heard of some cases about it. Albinism is an inherited condition that is present at birth. Read more at: http://www.answers.com/topic/albinism == Albinism results from the inheritance of recessive alleles. The condition is known to affect mammals (including humans), fish, birds, reptiles and amphibians. The principal gene which results in albinism prevents the body from making the usual amounts of the pigment melanin. Most forms of albinism are the result of the biological inheritance of genetically recessive genes that are passed on from both parents, although some rare forms are inherited from only one parent.
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Recessive. This trait can skip generations, because it requires two recessive alleles (ex. aa vs Aa), and can be present in heterogeneous alleles (Aa) without showing a recessive phenotype.
Albinism is the congenital absence of melanin in the dermis. Albinism is an inherited condition resulting from the combination of recessive alleles passed from both parents of an individual.This condition is known to affect mammals, fish, birds, reptiles, and amphibians.
First off, you don't make it - it's actually a congenital disorder due to a lack of melanin pigment in the eyes, skin and hair. Most forms of albinism are the result of the biological inheritance of genetically recessive alleles (genes) passed from both parents of an individual, though some rare forms are inherited from only one parent. There are other genetic mutations which are proven to be associated with albinism.
recessive + recessive or tt
Chromosome 9.
No.Most forms of albinism are the result of the biological inheritance of genetically recessive alleles (genes) passed from both parents of an individual, though some rare forms are inherited from only one parent. There are other genetic mutations which are proven to be associated with albinism. All alterations, however, lead to changes in melanin production in the body.The chance of offspring with albinism resulting from the pairing of an organism with albinism and one without albinism is low. However, because organisms can be carriers of genes for albinism without exhibiting any traits, albinistic offspring can be produced by two non-albinistic parents. Albinism usually occurs with equal frequency in both genders. An exception to this is ocular albinism, which it is passed on to offspring through X-linked inheritance. Thus, ocular albinism occurs more frequently in males as they have a single X and Y chromosome, unlike females, whose genetics are characterized by two X chromosomes.There are two different forms of albinism; a partial lack of the melanin is known as hypomelanism, or hypomelanosis and the total absence of melanin is known as amelanism or amelanosis.(Source wikipedia)
recessive + recessive or tt
only when two recessive alleles are present