Question

In Mendelian dihybrid cross when heterozygous Round Yellow are self-crossed, Round Green offspring are represented by the genotype
a. RRyY, rRyy, RRYy
b. Rryy, RRyy, rryy
c. rrYy, rrYY
d. Rryy, RRyy
e. RrYy, rryy, Rryy

Answer 1

First, comprehend the terms given within the question that are R- round, r- wrinkled, Y- yellow, y- green. For Associate in Nursing offspring to be spherical should contain one R and one inexperienced, it ought to contain each y genes.

Complete answer:
First, we must confirm that we should always comprehend Mendelian interbreeding.
An interbreeding describes 2 experiments between 2 organisms that are identically hybrid for 2 traits. monk selected to cross a pea that was homozygous and dominant for spherical (RR), yellow (YY) seeds with a pea that was homozygous and recessive for wrinkled (rr), inexperienced (yy) seeds, drawn by the subsequent notation:

RRYY x rryy

Organisms during this initial cross are known as the parental, or P generation. The offspring of the RRYY x rryy cross, that is named the F1 generation, were all heterozygous plants with spherical, yellow seeds and also the genotype RrYy.
Next, Mendel crossed 2 plants from the F1 generation. This step is interbreeding.

The genotype of the F1 plants is RrYy. These plants were self-crossed by monks. In his interbreeding F2 plants were obtained within the composition magnitude relation nine (round yellow):3(round green):3(wrinkled yellow):1(wrinkled green) as shown within the Punnett sq. spherical seeds may be drawn by the genotype RR or Rr as configuration of the seed could be a dominant attribute may be homozygous or heterozygous. The inexperienced color is homozygous recessive and may be drawn as yy.

Hence, the correct answer is option (D).

Note: A hybrid organism is one that's heterozygous, it implies that it carries 2 completely different alleles at a selected genetic position, or locus. Therefore, organisms that's heterozygous at 2 completely different genetic loci are known as a crossbreed organism. Mendel performed crossbreed crosses on pea and discovered a constitution of freelance assortment.