Eric and Dora are fraternal twins (i. e. they must be biological siblings) and they took an ancestry DNA test from two separate companies. The results of one company suggest Eric has 10% Russian heritage while the other suggests he has 25% Russian ancestry. The percentage of Russian heritage was the only major inconsistency between his two tests. Dora's tests from both companies indicated she had less than 5% Russian ancestry. Explain why or how it is possible for biological siblings like Eric and Dora to have differing percentages of Russian heritage AND explain why Eric's two tests have wide variability in the calculated Russian ancestry.

Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.

If assuming tasting ptc as a simple gene trait,what other genotype would you select to put in this missing genotype box that could result in this phenotype

Recombinant dna is the merging of dna from unrelated organisms to create new genetic varieties is assembled in the lab from mononucleotides was part of the green revolution of the 1960s is pollination of one plant by another of the same species is cross-pollination of one plant by a different species