E Both A anuD You cross two F2 progeny. A total of 47 of the 92 seed are resista

Question

E Both A anuD You cross two F2 progeny. A total of 47 of the 92 seed are resistant to PsMC1: what were the genotypes of the two F2-derived parents (R resistant allele, r susceptible allele)? ARRxrm BrxR CRrxrm D rr x E Unable to determine Drr x rrE Unable to determine or You cross two F1 progeny. A total of 47 of the 192 seed are resistant to PsMC1: what were the genotypes of the two F2-derived parents (R resistant allele, r susceptible allele)? A RRx rm B Rr x Rr rx rr D rr x rr E Unable to determine

Explanation / Answer

Punnett square, diagrams based on Mendelian Inheritance, are used to represent and predict the outcomes of classical breeding which support law of segregation and independent assortment.

As per the question,

R - Resistant allele;

r - Susceptible allele.

Also, the statistical data of the phenotype of the seed progenies abtained were:

Resistant seed progenies : 47

Total number of seed progenies : 92.(i.e. about 50% of the progeny population display dominant trait)

Depicting the cross in Punnett square,

based on the above diagram, option C, i.e. Rr X rr displays the genotypes of the two F2-derived parents.

r r R Rr (Resistant) Rr (Resistant) r rr (Susceptible) rr (Susceptible)

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