Imagine you performed a metagenomic study in which you obtained a sample of water from the huron river, isolated dna from the water sample and sequenced it using next generation sequencing on a new pacbio system, which allows to sequence fragments up to 5 kb long. you obtained sequences of several long dna fragments with no sequence similarity to any known genomes. which sequence is the most likely to be of viral origin? %a %t %g %ca. 12 13 37 38b. 31 32 18 19c. 10 32 39 19d. 24 24 27 25e. 39 40 10 11[only viruses may be single-stranded]

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1

Considering the yellow and green pea color phenotypes studied by gregor mendel: a. what is the biochemical function of the protein that is specified by the gene responsible for the pea color phenotype? (1 point) b. a null allele of a gene is an allele that does not specify (or encode) any of the biochemical function that the gene normally provides (in other words, either no protein at all or only non-functional protein is produced from it). of the two alleles, y and y, which is more likely to be a null allele? (1 point) c. in terms of the underlying biochemistry, why is the y allele dominant to the y allele? (2 points) d. why are peas that are yy homozygotes green? (1 point) e. the amount of protein produced from a gene is roughly proportional to the number of functional copies of the gene carried by a cell or individual. what do the phenotypes of yy homozygotes, yy heterozygotes, and yy homozygotes tell us about the amount of sgr enzyme needed to produce a yellow color? explain your reasoning. (2 points)

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.