Exam 4: Biosciences 1 || Already Graded A+.

1) If a horticulturist breeding gardenias succeeds in having a single plant with a particularly desirable set of traits, which of the following would be her most probable and efficient route to establishing a line of such plants? correct answers C) Clone the plant asexually to produce an identical one. 2) The human genome is minimally contained in which of the following? correct answers A) every human cell 3) In the human species, all somatic cells have 46 chromosomes. Which of the following can also be true? correct answers A) A plant species (privet shrubs) has 46 chromosomes per cell. 4) Which of the following is a true statement about sexual vs. asexual reproduction? correct answers B) In sexual reproduction, individuals transmit 50% of their genes to each of their offspring. 5) Which of the following defines a genome? correct answers E) the complete set of an organism's genes 6) At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype? correct answers B) metaphase 7) The human X and Y chromosomes correct answers D) include genes that determine an individual's sex. 8) Which of the following is true of a species that has a chromosome number of 2n = 16? correct answers C) Each cell has eight homologous pairs. 9) Eukaryotic sexual life cycles show tremendous variation. Of the following elements, which do all sexual life cycles have in common? I. Alternation of generations II. Meiosis III. Fertilization IV. Gametes V. Spores correct answers C) II, III, and IV 10) Which of these statements is false? correct answers D) At sexual maturity, ovaries and testes produce diploid gametes by meiosis. 11) Referring to a plant's sexual life cycle, which of the following terms describes the process that leads directly to the formation of gametes? correct answers B) gametophyte mitosis 12) Which of the following is an example of alternation of generations? correct answers B) A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte).