Enrichment Activity4 : From the words/ phrases listed above on the graphic organizers, explain briefly the following mechanism of change. You can explain through words, symbols or drawing Mechanism of Evolution 1. Natural selection 2. Mutation 3. Genetic Drift 4. Gerie flow 5. Recombination
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Answer:
1. resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.
2. There are two primary mechanisms of mutation: substitution of a deoxyribonucleotide (point mutations) whereby one deoxyribonucleotide is substituted for another during DNA replication
3. It refers to random fluctuations in the frequencies of alleles from generation to generation due to chance events. Genetic drift can cause traits to be dominant or disappear from a population. The effects of genetic drift are most pronounced in small populations.
4. Gene flow is the movement of genes into or out of a population. Such movement may be due to migration of individual organisms that reproduce in their new populations, or to the movement of gametes (e.g., as a consequence of pollen transfer among plants).
5. recombination, in genetics, primary mechanism through which variation is introduced into populations. Recombination takes place during meiosis, when maternal and paternal genes are regrouped in the formation of gametes (sex cells).
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