Is there a relationship between the problems encountered cloning mammals and the rarity of polyploidy in this group?

What will be an ideal response?


Possibly so; mammals, unlike some animal groups, appear to be extremely sensitive to gene dosage and even small perturbations in developmental pathways.

Biology & Microbiology

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Which of the following is NOT a lipid?

a. steroids b. triglycerides c. oils d. waxes e. monosaccharides

Biology & Microbiology

Years before Schwann’s pronouncement that a cell

has a life of its own even as a component of a multicellular organism, the cell nucleus had been discovered by a. Robert Hooke. b. Robert Brown. c. Theodor Schwann. d. Rudolf Virchow. e. Anton van Leeuwenhoek.

Biology & Microbiology

Sound amplification happens in the middle ear because of ________

A) size difference between the eardrum and oval window B) lever action of the ossicles C) resonance in the efferent outer hair cells D) stapedial reflex

Biology & Microbiology

The effects of mutation in human somatic cells have a low probability of causing harm because only _______ of human DNA encodes gene products.

A. greater than 5 percent B. less than 2 percent C. less than 4 percent D. greater than 8 percent E. greater than 3 percent

Biology & Microbiology