In a dihybrid cross between two heterozygotes, AaBb × AaBb, if we get a 3 : 1 ratio among offspring, the reason would be ___________.
In a dihybrid cross between two heterozygotes, AaBb × AaBb, if we get a 3 : 1 ratio among offspring, the reason would be ___________.
The correct option is B Linked genes
A.Polygenes – Inheritance is controlled by two or
more genes in which the dominant alleles have cumulative effect, with each dominant
allele expressing a part of functional polypeptide and full trait is shown when
all the dominant alleles are present, is called Polygenic or Quantitative
inheritance.
B.Linked genes – The tendency of some genes to
inherit together is known as linkage, and the genes are linked genes.
C. Pseduoalleles
- Genes are present together side by side and they produce related phenotypes
are called pseudoalleles. These are distinguished from true alleles through
rare crossing over.
D. Hypostatic
gene – A gene whose effect are masked is by another gene is called Hypostatic
gene. In the F2 generation 12:3:1 ratio.
In a dihybrid cross between two heterozygotes,
AaBb x AaBb, if we get a 3:1 ratio among offspring, the reason would be Linked
genes.
So,
the correct option is ‘Linked genes’.
A.Polygenes – Inheritance is controlled by two or more genes in which the dominant alleles have cumulative effect, with each dominant allele expressing a part of functional polypeptide and full trait is shown when all the dominant alleles are present, is called Polygenic or Quantitative inheritance.
B.Linked genes – The tendency of some genes to inherit together is known as linkage, and the genes are linked genes.
C. Pseduoalleles - Genes are present together side by side and they produce related phenotypes are called pseudoalleles. These are distinguished from true alleles through rare crossing over.
D. Hypostatic gene – A gene whose effect are masked is by another gene is called Hypostatic gene. In the F2 generation 12:3:1 ratio.
In a dihybrid cross between two heterozygotes, AaBb x AaBb, if we get a 3:1 ratio among offspring, the reason would be Linked genes.
So, the correct option is ‘Linked genes’.
