if an allele is dominant, then: one allele can mask the expression of a recessiv
ID: 564664 • Letter: I
Question
if an allele is dominant, then:
one allele can mask the expression of a recessive allele in a hybrid.
its phenotype is expressed only in homozygous individuals..
its phenotype is only expressed in heterozygous individuals.
its phenotype is more beneficial than the recessive phenotype.
its phenotype is always expressed in all generations.
a.one allele can mask the expression of a recessive allele in a hybrid.
b.its phenotype is expressed only in homozygous individuals..
c.its phenotype is only expressed in heterozygous individuals.
d.its phenotype is more beneficial than the recessive phenotype.
e.its phenotype is always expressed in all generations.
Explanation / Answer
An allele is the different form of a gene (which is the one member of a pair) that is located at a particular position on a specific chromosome. They are of two types, one is dominant and another one is recessive. There are three combinations are possible for them:
DD, DR, RR
DD and RR found only in homozygous individuals and DD express the phenotype of the dominant allele and RR express the phenotype of recessive allele only.
DR only in heterozygous individuals, in this case, the phenotype of the dominant allele is expressed.
Based on the above statement:
We can say that the option (e) is the correct statement.
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