Biology chapter questions

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20 questions multiple choice.Question 1

  1. Sickle cell anemia is an example of what type of inheritance? A.complete dominanceB.recessive dominanceC.multiple allelesD.incomplete dominanceE.codominance

    5 points

    Question 2

    1. After the DNA is replicated, and it condenses in prophase, two identical rods of DNA are seen. These are A.chromatids.B.chromatin.C.spindle fibers.D.centromeres.E.kinetochores.

      5 points

      Question 3

      1. In what phases is the genetic material in the cell correctly referred to as chromatids? A.interphase and telophaseB.interphase and prophaseC.metaphase and prophaseD.metaphase and telophaseE.anaphase and metaphase

        5 points

        Question 4

        1. Cytokinesis in plant cells differs from cytokinesis in animal cells because plant cells, the cell plate must also divide into two parts.B.the contractile protein, actin, is important only in plant cells.C.plant cells have a rigid cell wall.D.a contractile ring forms only in plant cells.E.there is no difference.

          5 points

          Question 5

          1. In humans, a gene that has been identified as causing a type of skin cancer is the A.sonic hedgehog.B.mutant mole rat.C.mutant superman.D.superhero aardvark.E.superwoman echidna.

            5 points

            Question 6

            1. Tall corn plants (T) are dominant to dwarf plants (tt). Solid green leaves (G) are dominant to leaves with a white tip (gg). A cross between two corn plants yielded the following phenotypes: 51 tall plants with a white tip on their leaves; 43 dwarf plants with solid leaves; 48 dwarf plants with white tips on their leaves; 45 tall plants with solid leaves. What are the genotypes of the parents that produced these plants? A.TtGg x TtggB.TtGg x TtGgC.None of the aboveD.TtGg x ttggE.ttGG x TTgg

              5 points

              Question 7

              1. Duchenne muscular dystrophy (MD) is inherited from an X-linked recessive allele. What is the probability that a son with Duchenne MD inherited this disease from his biological father? A.1/4B.1/2C.1/8D.0E.1/16

                5 points

                Question 8

                1. div class=”vtbegenerated inlineVtbegenerated”>An allele is alternate form of a gene.B.always one of a pair.C.the main factor determining a trait.D.the dominant form of a gene.E.always recessive.

                  5 points

                  Question 9

                  1. The genetic makeup of a particular trait in an individual is its A.filial.B.heterozygosity.C.dominance.D.phenotype.E.genotype.

                    5 points

                    Question 10

                    1. If you view a cell in which the genetic material is beginning to be visible as separate bodies, and the nucleus has disappeared from view, you may surmise that the cells is in A.prophase.B.anaphase.C.interphase.D.metaphase.E.telophase.

                      5 points

                      Question 11

                      1. Special cells found in the gonads that give rise to gametes upon division are called A.basal cells.B.egg cells.C.stem cells.D.somatic cells.E.germ cells.

                        5 points

                        Question 12

                        1. Gregor Mendel was successful in his analysis of the genetics of pea plants because A.he studied a trait that had a strange inheritance pattern.B.he decided to only look at his results in an objective manner.C.he examined and analyzed both the F1 and F2 generations.D.he studied the parental plants to determine their differences.E.pea plants have genetics different from other organisms.

                          5 points

                          Question 13

                          1. What structure holds the sister chromatids to the spindle fibers? A.










                            5 points

                            Question 14

                            1. At the end of metaphase I, _______________ separate. A.sister chromatidsB.germ cellsC.haploid chromatidsD.homologous chromosomesE.centrioles

                              5 points

                              Question 15

                              1. Skin cancers typically develop in the A.upper layers of the dermis.B.upper layers of the epidermis.C.lower layers of the dermis.D.lower layers of the epidermis.E.subcutaneous layer.

                                5 points

                                Question 16

                                1. If an organism’s diploid chromosome number is 18, how many different possible combinations of homologous chromosomes lining up during meiosis exist for the eggs or sperm produced by that organism? A.9B.512C.128D.36E.18

                                  5 points

                                  Question 17

                                  1. The segregation principle states that in sexually reproducing diploid organisms the two copies of each gene A.must always be the same allele.B.separate from each other during mitosis. C.segregate from each other during meiosis.D.will both wind up in either the sperm or egg.E.move together as a unit during meiosis.

                                    5 points

                                    Question 18

                                    1. Which of the following statements is true: A.In carriers, the recessive allele causes an intermediate phenotype.B.In recessive genetic disorders, the mother and/or father of an affected individual must also be affected.C.With recessive genetic disorders, if both parents are carriers, the offspring will all be affected.D.The dominant allele is masked in homozygous dominant individuals.E.With dominant genetic disorders, the mother and/or father of an affected individual must also be affected.

                                      5 points

                                      Question 19

                                      1. Mendel observed that dominant traits A.are expressed in all plants.B.were absent in the F1 generation of pea plants that he used in his experiments.C.were the only traits seen in the F2 generation of pea plants in his experiments.D.are only expressed in hybrids.E.are seen in all of the F1 hybrid pea plants in his experiments.

                                        5 points

                                        Question 20

                                        1. Consider two traits for an organism, determined by two genes, each of which is governed by at least two alleles. In the case of a dihybrid individual, the gametes formed will be of either the parental type or the recombinant type. Recombinant type gametes are formed because of A.the principle of dihybrids.B.independent assortment.C.multiple alleles.D.heterozygosity.E.incomplete dominance.

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