While observing some ants, a group of german scientists noticed that the ants had an excellent sense of distance. wondering how this was possible, they decided to perform an experiment.

first, the scientists taught ants to retrieve food from a feeder placed near the ants' home. then, they removed the lower portion of some of the ants' legs to make them shorter. they also attached tiny stilts to some of the other ants' legs to make them longer. finally, the scientists watched the altered ants attempt to retrieve food from the feeder.

after several trials, the scientists found that the ants with shortened legs walked toward the feeder but stopped short of it. on the other hand, the ants with lengthened legs walked past the feeder.

which of the following conclusions can be made given this information?

Describe at least 2 abiotic and two biotic factors found in the desert biome how do these abiotic factors interact with the biotic factors

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)

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back