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How many recessive genes must someone have to produce albinism?
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What does recessive albinism mean?
An Autosomal recessive pattern is one in which certain genes of the X sex chromosome are turned off, autosomal is in reference to the X chromosome and the fact that the genes are turned off is indicated by the recessive. So in the case of Albinism the pigmentation genes in the X chromosome are turned off causing the various side effects.
Can an A and O positive produce an AB?
yes, through recessive genes and dominant genes
Why does albinism exist?
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.
Do dominant genes affect recessive genes?
The dominant genes take over, and then the recessive genes hide away
Which genes are dominant and which are recessive?
Dominant genes are always expressed in preference to recessive genes in cased where both genes are present.
What genes does a homozygous short pea plant always have?
Recessive genes
Do autosomes have lethal recessive genes?
Yes. Autosomes CAN have lethal recessive genes, but that does not mean they always contain recessive mutations.
What is recesive ginetic?
Blue or green eyes. To produce a light eyed child the parents must have the recessive genes.
If an animal with 2 dominant genes for a trait has offspring with an animal with 2 recessive genes for same trait their offspring can only have what?
Their offspring will have dominant genes. However, if these offspring have offspring with an amimal with recessive genes, the recessive genes will show up.
If 2 human albinos with black parents have babies what color skin will the babies have?
Most forms of albinism result from the inheritance of recessive genes. I would hazard to say the children would be albino too.
When is the only time a recessive phenotype can be observed?
A recessive phenotype can only be observed when the individual carries both the recessive alleles for the specific trait.
Can you tell by looking at someone if they are pure or hybrid for a dominant gene?
There are two ways to tell. Get a gene test or marry some one with the recessive trait and have 2 to four kids. Otherwise, no. There are two terms, genotype and phenotype. Genes can get pretty complicated because there are dominant and recessive genes. Dominant genes cover the expression of recessive genes so it is hard to tell if someone has an underlying recessive gene. When someone has a homozygous dominant gene, meaning both alleles are dominant, has the same phenotype as a heterozygous gene meaning one dominant and one recessive allele. Their genotypes are different, but their phenotype will look the same.
