Which statement about alleles is not true? | Filo
filo Logodropdown-logo

Class 10



Heredity and Evolution

view icon698
like icon150

Which statement about alleles is not true?

  1. There may be several at a locus.
  2. One may be dominant over another.
  3. They occupy different loci on the same chromosome.
  4. None of the above
Correct Answer: Option(c)
Solution: The alternative forms of a gene are alleles. Since genes are present on chromosomes on fix loci, an allele is present at a locus on a chromosome. 
A trait that fully manifests itself, in heterozygous condition, is referred to as the dominant trait and the allele controlling it is known as a dominant allele. The trait that does not express itself in heterozygous condition or whose effect is masked by the presence of dominant trait is known as a recessive trait and the responsible allele is termed as a recessive allele. Dominant-recessive relationship of alleles is due to the production of less functional protein/non-functional protein/no protein product at all by a recessive allele.   
Multiple alleles refer to the presence of more than two alternate forms of a gene which should be accommodated on two loci on a homologous pair. This is facilitated by the presence of more than one allele on the same locus provided one allele is present at a locus at a time in a chromosome.
Therefore, the correct answer is option C.
view icon698
like icon150
filo banner image

Connecting you to a tutor in 60 seconds.

Get answers to your doubts.

playstore logoplaystore logo
Similar Topics
components of food
why do we fall ill
heredity and evolution
diversity in living organism
heredity and evolutio