Fill the blanks in Columns A and B using appropriate terms. Theory Scientists (a) Theory of natural selection A (b) Use and Disuse of Organs B (c) Theory of Mutation C (d) Theory of spontaneous generation D

Theory of natural selection given by Charles Darwin states that the better adapted species are naturally selected by the environment. Lamarck proposed that the organs that are used continuously undergo hypertrophy and those not used, degenerate with time. Hugo De Vries proposed the theory of mutation. The theory of spontaneous generation (abiogenesis) proposed by Aristotle states that life can arise from non-living matter. Theory Scientists (a) Theory of natural selection Darwin (b) Use and Disuse of Organs Lamarck (c) Theory of Mutation De Vries (d) Theory of spontaneous generation Aristotle

Prepare a flow chart showing the evolution of modern man in the hierarchical order of their evolution using the details given below: Homo erectus, Homo habilis, Dryopithecus, Australopithecines, Homo sapiens, Ramapithecus, Neanderthal man

The evolution of modern man in the hierarchical order of their evolution is as follows: D r y o p i t h e c u s ↓ R a m a p i t h e c u s ↓ A u s t r a l o p i t h e c u s ↓ H o m o h a b i l i s ↓ H o m o e r e c t u s ↓ N e a n d e r t h a l m a n ↓ H o m o s a p i e n s The evidence to study human evolution is obtained from fossil records. In modern times, the analysis of the DNA obtained is considered to be the most reliable method of estimation.

Explain the factors affecting Hardy-Weinberg's equilibrium.

The factors affecting Hardy-Weinberg's equilibrium are as follows: Gene flow: This alters Hardy-Weinberg's equilibrium as it occurs when breeding between two populations transfers new alleles into a population. Genetic drift: This is the change in the frequency of an existing gene variant (allele) in a population due to random sampling of organisms. This alters Hardy-Weinberg's equilibrium. Mutation: One of the conditions that must be met for Hardy-Weinberg equilibrium is the absence of mutations in a population. Mutations are permanent changes in the gene sequence of DNA. These changes alter genes and alleles leading to genetic variation in a population. Genetic recombination: Genetic recombination refers to the rearrangement of DNA sequences by the breakage and rejoining of chromosomes or chromosome segments. It also describes the consequences of such rearrangements, that is, the inheritance of novel combinations of alleles in the offspring that carry recombinant chromosomes. Natural selection: Natural selection and nonrandom mating disrupt the Hardy-Weinberg equilibrium because they result in changes in gene frequencies. Natural selection can cause microevolution (change in allele frequencies), with fitness-increasing alleles becoming more common in the population.

Fill the blanks in Columns A and B using appropriate terms. Theory Scientists (a) Theory of natural selection A (b) Use and Disuse of Organs B (c) Theory of Mutation C (d) Theory of spontaneous generation D

Theory of natural selection given by Charles Darwin states that the better adapted species are naturally selected by the environment. Lamarck proposed that the organs that are used continuously undergo hypertrophy and those not used, degenerate with time. Hugo De Vries proposed the theory of mutation. The theory of spontaneous generation (abiogenesis) proposed by Aristotle states that life can arise from non-living matter. Theory Scientists (a) Theory of natural selection Darwin (b) Use and Disuse of Organs Lamarck (c) Theory of Mutation De Vries (d) Theory of spontaneous generation Aristotle