The jelly-like substance that fills the cell and holds organelles is the: MCQ with Answer and Explanation

Explanation:
Artificial insemination (AI) is a widely used reproductive technology in cattle breeding, allowing the use of superior bull semen to improve the genetic merit of the herd without keeping the bull. Multiple Ovulation Embryo Transfer (MOET) involves stimulating a superior female to produce multiple eggs, fertilizing them, and transferring the embryos to surrogate mothers, rapidly increasing the number of high-quality offspring. Crossbreeding involves mating animals of different breeds to combine desirable traits and increase heterozygosity, thereby increasing, not reducing, genetic diversity. Thus, statements 1 and 2 are correct.

Explanation:
Agarose gel electrophoresis separates DNA fragments by size under an electric field; smaller fragments migrate faster. PCR amplifies DNA, sequencing determines base order, cloning produces copies.

Explanation:
The fluid mosaic model (Singer-Nicolson) depicts the cell membrane as a phospholipid bilayer with embedded proteins, carbohydrates, and cholesterol, giving it fluidity.