watched hd most successfully implant in the uterus. The scientists psed video in
ID: 257266 • Letter: W
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watched hd most successfully implant in the uterus. The scientists psed video in lecture) were observing 28. In the study I discussed in lecture, scientists were predictions about which emm C. binary fission 29. An example of complete dominance in humans is dominant trait. If someone cannot roll their tongue, what is their genotype the ability to roll the tongue. It is a B. Rr ?.rr D. can roll tongue E.cannot roll tongue 30. An example of complete dominance in humans is the ability to taste the chem a dominant trait. If someone cannot taste it, what is their phenotype? B. Rr C. Fr D. can taste PTC E. cannot taste PTC 31. Which of the following represents a homozygous genotype? B. Nn D. Both NN and nn 32. What enzyme is responsible for unzipping and opening up the double stranded DNA molecule so that DNA replication can occur? A. DNA helicase B. DNA polymerase C. DNA ligase 33. The type A blood allele and the type B blood allele both mask the effect of the type O blood allele. This is an example of A. pleiotropy B. independent assortment C. co-dominance D. complete dominanceExplanation / Answer
28. In humans, the way of reproduction is meiosis, which is a specialized type of cell division that reduces the chromosome number by half, creating four haploid cells, each genetically distinct from the parent cell that gave rise to them. So implantation of embryo in uterus you were watching was the process of meiosis. Therefore, your answer is (B).
29. First of all you should know that rolling or not being able to roll the tongue is a phenotypic trait, therefore, options D and E are out. Now, by convention we write dominant genotype in uppercase and recessive genotype in lower case. So someone who is not able to roll their tongue must have both recessive allele in the genotype (lower case). Therefore, your answer is rr i.e. (C).
30. Among the two phenotype options that are given in D and E, we need to choose the non-dominant trait i.e. tphenotypic trait of not being able to taste PTC. Therefore, your answer is (E).
31. Homozygous genotype is the one that has both alleles the same, it doesn't matter if they are dominant or recessive. Hence both RR and rr genotypes are homozygous. Therefore your answer is (D).
32. As the name suggests DNA helicase is the enzyme that separates the two strands of DNA during replication. Therefore, your answer is (A).
33. When type A blood and type B blood alleles together mask the effect of type O blood allele, we call it codominance of blood alleles A and B. Therefore, your answer is (C).
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