In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY x rryy?
In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY x rryy?
- Only round seeds with green cotyledons
- Only wrinkled seeds with yellow cotyledons
- Only wrinkled seeds with green cotyledons
- Round seeds with yellow cotyledons and wrinkled seeds with yellow cotyledons
The Correct Option is D
Solution and Explanation
In Mendel's experiments with garden peas, the expected phenotypes in the F2 generation of the cross RRYY x rryy would follow the principle of independent assortment. So, the expected phenotypes in the F2 generation would be Round seeds with yellow cotyledons and wrinkled seeds with yellow cotyledons. This is because the two traits, seed shape (round or wrinkled) and cotyledon color (yellow or green), are on different gene loci and independently assort during meiosis.
So, the correct option is (D): Round seeds with yellow cotyledons and wrinkled seeds with yellow cotyledons
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Concepts Used:
Biotechnology
Biotechnology is a vast field of biology that involves the creation, production, and modification of useful products for human welfare using both the technology and the execution of living organisms and their components. An agricultural engineer, Karoly Ereky, coined the word "biotechnology" in 1919, achieving him the title of "Father of Biotechnology."
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Among many, the two core techniques that entitled the birth of modern biotechnology are :
- Genetic Engineering is one of the methods of direct modifications of an organism's genome (i.e., DNA and RNA). It requires the introduction of new genes into host species to escalate function or trait, hence altering the host organism's phenotype.
- Bioprocess Engineering is one of the methods of maintaining sterile conditions to facilitate the growth of large quantities of desired microbes and other eukaryotic cells for the development of new or modified biotechnological products such as enzymes, vaccines, antibiotics, and other biotechnological products.