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_________________ is the passing of traits from parent to offspring. Reproduction b. Heredity c. DNA d. Genes e. Punnett squares 7.
6._________________ is the passing of traits from parent to offspring.a.Reproductionb.Heredityc.DNAd.Genese.Punnett squares7.In a Punnett square, how do you tell the difference between a dominant allele and a recessive allele?8.Each cell in an organism’s body contains ___________ allele(s) for each gene.a.1b.2c.4d.Either 1 or 2e.An unknown number9.Each gamete (sex cell; sperm or egg) carries ______________ allele(s) for each gene.a.1b.2c.4d.Either 1 or 2e.An unknown number10.In the example cross used in the video, what was the probability of the offspring being a short pea plant?a.1 in 4b.2 in 4c.3 in 4d.4 in 411.In fruit flies, gray body color is dominant over black body color. Using the letter G to represent body color, what is the genotype of a heterozygous gray-bodied fly?a.Greyb.Blackc.GGd.gge.Ggf.GGgg12.Follow the instructions in the Question column to complete the virtual lab scenarios and record your data. Click the lab notebook to perform genetic crosses.13.When you record a ratio, whether it is genotypic or phenotypic ratio, always record the most dominant characteristic first, followed by the recessive. For example, when recording genotypic ratios: 1 GG : 2 Gg : 1 gg (or 1:1 in the reduced form) 4 gg 14.When you record phenotypic ratios for a monohybrid cross, there are only two possible phenotypes - either the dominant phenotype or the recessive phenotype. So you do not need to indicate the phenotype, simply put the dominant # first, labeled with the dominant phenotype, followed by the recessive # and recessive phenotypea.If your offspring phenotypes are 3 dominant grey flies and 1 recessive black fly, the ratio is: 3 grey : 1 black b.If your offspring phenotypes are 4 dominant long wing flies and 0 recessive vestigial wing flies, the ratio is: 4 long : 0 short0 long : 4 short15.Complete all ten scenarios and record your results in Table 1. Each row of the table will count as one question. You will need to click the reset button to see the different scenarios. Table 1: Record your data for each scenario.Scenario #Genotype of Parent IGenotype of Parent IIGenotypic Ratio of OffspringPhenotypic Ratio of Offspring1234567891016.All of the offspring of two gray bodied flys are also gray. What can you conclude about the genotypes of the parent flies?a. They are both heterozygousb.They are both homozygous dominantc.They are both homozygous recessived.You cannot conclude anything definitively about the parental genotypes17.Some of the offspring of two gray bodied flies are black. What can you conclude about the genotypes of the parent flies?a. They are both heterozygousb.They are both homozygous dominantc.They are both homozygous recessived.You cannot conclude anything definitively about the parental genotypes18.You’ve been given a grey fly and asked to determine its genetic makeup.a.Given that grey is dominant over black, what is/are the possible genotype(s) for this fly?b.Describe how you would determine the actual genotype of the fly in question.19.A new mutation is discovered in flies that turns them a bright red color!a.You cross the new mutant red fly with a normal fly. All the offspring are bright red. What does this tell you about the allele that causes the red coloring—is it dominant or recessive? Explain your reasoning.b.You take two of the red offspring flies from part b above and cross them to each other. What phenotypic ratio (what colors) do you expect to see in the next generation?
