Question

Different versions of the same gene are known as alleles.
True
False

Answer 1

True

Answer 2

@thenitesh560255 Hai Sweet Friend, WeLcoMe to OpeN stuDy.. !!

>> Ofcourse,its False. Alleles of a gene are found at the same locus on homologous chromosomes.

@mrdoldum Please Don't give wrong answers.. !

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Answer 3

@Koikkara, it is not a wrong answer. Maybe you need to open your genetics book. See http://ghr.nlm.nih.gov/glossary=allele

NIH is the National Institute of Health from the US Government.

Answer 4

@mrdoldum that means a person can have more than two alleles for a single gene?

Answer 5

Yes. Let's look at humans. We have 46 chromosomes, but two copies of each (save for males with XY). That means we have 23 different chromosomes, on each of the chromosomes at a particular location (technically called a locus (loci plural), there is a gene. We therefore have at least two copies of all genes on the non-sex chromosomes. Those copies can be identical to each other or different. This is why men have a higher rate of color blindness than women. The genes involved for color eyesight are on the X chromosome. A single mutated copy in a male human can result in color blindness while in a female human (that has two X chromosomes) there are two copies thus one mutated version is not enough.

Help?

Answer 6

@Koikkara, see above post. Sorry, for got to tag you in the post itself.

Answer 7

@Koikkara, I think this misunderstanding is due to the definition of "gene". A gene is a region of DNA that codes for something. We define genes by what they code for, not where they are. This is why you can have multiple copies of a gene, and those multiple copies are called alleles. In some fungi certain wood decaying genes are copied 10-20 times on a single chromosome, not even looking at homologous chromosomes.