In a complementary gene interaction,calculate | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) In a complementary gene interaction,the presence of at least one dominant allele of both genes ($A$ and $B$) is required for the expression of a s

Vedclass · Accepted Answer

$2 	ext{ phenotypes, } 4 	ext{ genotypes}$

Vedclass · Answer

(B) In a complementary gene interaction,the presence of at least one dominant allele of both genes ($A$ and $B$) is required for the expression of a specific phenotype. For the cross $AaBb 	imes aaBB$: $1$. The gametes produced by $AaBb$ are $AB, Ab, aB, ab$. $2$. The gametes produced by $aaBB$ are $aB$. Performing the cross: - $AB 	imes aB = AaBB$ - $Ab 	imes aB = AaBb$ - $aB 	imes aB = aaBB$ - $ab 	imes aB = aaBb$ The resulting genotypes are $AaBB, AaBb, aaBB, aaBb$. There are $4$ distinct genotypes. Regarding phenotypes: - $AaBB$ and $AaBb$ both have at least one dominant allele of both genes ($A$ and $B$),so they express the same phenotype. - $aaBB$ and $aaBb$ lack the dominant allele $A$,so they express a different phenotype. Thus,there are $2$ phenotypes and $4$ genotypes. The correct option is $B$.

Column-$I$	Column-$II$
$A$. Mendel	$i$. Allele
$B$. Bateson	$ii$. Factors
$C$. Johannsen	$iii$. Chromosome
$D$. Sutton and Boveri	$iv$. Gene

In a complementary gene interaction,calculate the number of phenotypes and genotypes produced in a cross $AaBb \times aaBB$.

Similar Questions

The number of chromosomes in the cells of bread wheat ($Triticum$ $aestivum$) indicates that it is ...... .

The phenotype of an individual may be affected if the modified allele produces:
$(a)$ No enzyme at all
$(b)$ The normal/less efficient enzyme
$(c)$ $A$ non-functional enzyme

'Eugenics' pertains to

In what context does an epistatic gene differ from a dominant gene?

Match the following columns:

Column-$I$ Column-$II$

$A$. Mendel $i$. Allele

$B$. Bateson $ii$. Factors

$C$. Johannsen $iii$. Chromosome

$D$. Sutton and Boveri $iv$. Gene

Vedclass Test Series

Exam Paper Generator

Online Exam Module