The wings of a bird and the wings of an insect are examples of: MCQ with Answer and Explanation

Explanation:
Cloning produces genetically identical copies of a DNA fragment (molecular cloning) or an entire organism (reproductive cloning). Hybridization is crossing different varieties, mutation is change in DNA, transformation is DNA uptake.

Explanation:
Oxytocin (and ADH/vasopressin) are peptide hormones synthesized by the neurosecretory cells of the hypothalamus (supraoptic and paraventricular nuclei). They are transported down the axons of these neurons and stored in the nerve terminals of the posterior pituitary (neurohypophysis). Upon neural stimulation, they are released directly into the bloodstream from the posterior pituitary. The anterior pituitary synthesizes its own hormones.

Explanation:
The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain constant (in equilibrium) from generation to generation in the absence of evolutionary influences. The conditions required for this equilibrium are: no mutation, random mating, no gene flow (migration), very large population size (no genetic drift), and no natural selection. Therefore, random mating is a condition that MAINTAINS the equilibrium, not a factor that disrupts it. Non-random mating would disrupt it.