Which statement is TRUE?
A. Natural selection works on variation already present in a population.
B. Individual organisms evolve structures that they need.
C. Natural selection works on non-heritable traits.
D. Individuals evolve through natural selection.
A. Natural selection works on variation already present in a population.
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Which of the following is not true of mitotic recombination?
A. Recombination occurs during mitosis when replication forks encounter lesions in the process of repair or single-strand breaks. B. The recombinase Dmc1 is active in mitotic and meiotic recombination mechanisms. C. The BRCA2 protein is a recombination mediator active in mitotic recombination repair. D. It employs synthesis-dependent strand annealing (SDSA) most commonly. E. It can employ double-strand break repair (DSBR), which can lead to crossing over.
Describe the components of a freely movable joint, and give their functions. What happens when there is inflammation of the joint?
What will be an ideal response?
Melatonin is produced by the pineal gland
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Which of the following is NOT related to genetic drift?
A. Bottleneck effect B. Neutral variation C. Non-Darwinian evolution D. Founder effect E. Sexual selection