Zoology - Principles of Inheritance and Variation Question with Solution | TestHub
ZoologyPrinciples of Inheritance and VariationMonohybrid and Dihybrid CrossesEasy2 minPYQ_2020
ZoologyEasysingle choice
In Mendelian dihybrid cross, when a heterozygous pea plant with round yellow seeds is selfed, offsprings with round green seeds are produced. They are represented by the genotypes
Options:
Answer:
D
Solution:
The Dihybrid cross is when two pairs of contrasting characters are crossed between homozygous members for those characters.
Self-crossing of pea plant heterozygous for round and yellow seeds will give the following progenies -
| RY | Ry | rY | ry | |
| RY | RRYY | RRYy | RrYY | RrYy |
| Ry | RRYy | RRyy | RrYy | Rryy |
| rY | RrYY | RrYy | rrYy | rrYy |
| ry | RrYy | Rryy | rrYy | rryy |
Round seeds have the genotype - RR/Rr
Green seeds have geotype - yy
Seeds with round shape and green colour genotype - Rryy/RRyy.
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Principles of Inheritance and VariationSubtopic:Monohybrid and Dihybrid Crosses
⏱ 2mℹ️ Source: PYQ_2020
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