Microtubules originate on the centre of the cell taking the positive end to the periphery of the cell, while the negative end remains turned to the centre of the cell. The melanosomes move along these microtubules using motor proteins desiganted kinesins and dyneins. The kinesins are responsible for moving the melanosomes to the positive end of the microtubule (periphery of the cell) generating dark-colored cells, whereas dyneins move the melanosomes to the negative end of the microtubule (centre of the cell) generating light-colored cells.
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<em>A transgenic organism is an organism with DNA from another organism.</em>
Being more precise a GMO is an organism whose inherited character has been changed.
Answer:
Explanation: The basic unit of a DNA is a Nucleotide. The nucleotide comprises of: the nitrogenous bases, a deoxyribose sugar and a phosphate group. The nitrogenous bases are the purines and pyrimidines . The include, Adenine, guanine, Thymine and cytosine
Answer:
yes
Explanation:
creatine like horns of rhinos or finger nails
Answer:
TRUE
Explanation:
Yes this is true that Complex DNA repair mechanisms in many organisms is a challenge to Darwinian evolution because DNA repair is complex involving many proteins and Darwinian evolution would need to evolve all of these proteins simultaneously. The importance of neutral mutations has emphasized by Evolutionary theory.
DNA repair: The process through which cell repairs it's impaired DNA is called DNA repair process.
