In a population, the observed and expected numbers of differ…
In a population, the observed and expected numbers of different genotypes are shown in the table below. The observed and expected are significantly different. Which of the following explanations is consistent with these results? expected number observed number HH 114,000 119,000 Hh 249,000 241,000 hh 135,700 140,000
Read DetailsA type of plant has a gene for a protein that causes the pla…
A type of plant has a gene for a protein that causes the plant to produce a chemical in its leaves. R1R1 plants produce a high concentration of the chemical; R1R2 plants produce moderate concentrations of the chemical, and R2R2 plants do not produce the chemical. The relative fitnesses of each genotype are shown in the table below. The population is very large – 5,000,000 individuals – and 25% of them currently produce the functional protein. genotype phenotype relative fitness R1R1 high concentration of chemical 0.70 R1R2 moderate concentration of chemical 0.85 R2R2 no chemical 1.0 Based on this, what can we predict about the evolution of this trait (chemical production) as a result of natural selection if the conditions remain the same as they are now?
Read DetailsAn mRNA sequence starts off with 5′ – A C C G U G A U G U C…
An mRNA sequence starts off with 5′ – A C C G U G A U G U C C G U C G C A … 3′. Following the “rules” for reading mRNA, what will be the first four amino acids in the protein this mRNA codes for? [c] The primary structure of a polypeptide is synthesized based on the information in the mRNA by [z]. The molecule responsible for matching an amino acid to its codon is [b] A point mutation changes a codon from 5′ UGG 3′ to 5′ UGU 3′. What would be the impact of this mutation on the protein produced from the mRNA? [d]
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