Question

The process of combining cytoplasmic genomes of one parent with nuclear genome of other parent is called -

• A. Somatic hybridization
• B. Micropropagation
• C. Cybridization
• D. Regeneration

Hint:

Break down the terms: {Somatic Hybrid} = somatic cells fused completely. {Cybrid} = {Cy}toplasmic Hy{brid}, indicating a hybrid cytoplasm with one parent's nucleus.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
The question describes a specific genetic modification technique where the resulting cell contains the nucleus from one parent and the cytoplasm (containing mitochondria and chloroplasts) from another parent.
Step 2: Detailed Explanation:
Somatic hybridization: This is the fusion of whole protoplasts (plant cells without walls) from two different species. The resulting hybrid cell (heterokaryon) contains the nuclei and cytoplasms of both parents.
Micropropagation: This is a method for rapidly cloning plants in vitro to produce a large number of genetically identical offspring. It does not involve combining genomes from different parents.
Cybridization: This term stands for "cytoplasmic hybridization." It is a modification of somatic hybridization where protoplasts are fused, but the nucleus of one parent is eliminated, either before or after fusion. The resulting cell, or "cybrid," contains the nucleus of one parent and the cytoplasm of the other, or a mixture of cytoplasms from both. This precisely matches the description.
Regeneration: The general process of growing a whole plant from cultured cells or tissues.
Step 3: Final Answer:
The process of creating a cell with the nucleus of one parent and the cytoplasm of another is called cybridization.