17. Which of the following is the currently accepted theory of inheritance: A) p

Question

17. Which of the following is the currently accepted theory of inheritance: A) pangenesis B) blending-inheritance theory C) preformationism D) germ-plasm theory E) All of these are inaccurate concepts 18, Meiosisi differs from mitosis in that A) homologous chromosomal pairs are separated 8) the cells produced at the end of meiosis I are genetically different from each other and from the cell that underwent meiosis I C) the chromosome number within the daughter cells produced at the end of meiosis is one-half that of the mother cell that underwent melosis D) None of the above are differences between meiosis and mitosis E) All of the above are differences between meiosis and mitosis 19. A Chromosome A) always consists of a single chromatid B) always consists of 2 non-sister chromatids C) always consists of 2 sister chromatids D) can consist of a single chromatid or 2 non-sister chromatids E) can consist of a single chromatid or 2 sister chromatids 20. The following cell shown in a stage of mitosis or meiosis, is from a rare species of plant. What is the diploid number of chromosomes in this plant and what is the name for the stage of mitosis or meiosis shown? A) Diploid chromosome number of 3 and anaphase of mitosis 8) Diploid chromosome number of 6 and anaphase of mitosis C) Diploid chromosome number of 3 and anaphase I of melosis D) Diploid chromosome number of 6 and anaphase II of melosis E) Diploid chromosome number of 6 and anaphase I of melosis l chromosomes in the nucleus, genes are also located within 21. In addition to the genes located on the of both animal and plant cells and the of plant cells. These organelles segregate randomly during cell division and thereby contribute to genetic variation. A) mitochondria; centrosomes B) chloroplasts; mitochondria C) mitochondria; chloroplasts D) centrosomes; mitochondria mitochondria; lysosomes Gain of two homologous chromosomes (2n+2) s referred to as disomy B) diploidy C) tetrasomy D) tetraploidy E) dicentrism

Explanation / Answer

17. E) All of these are inaccurate concepts.

18. C) The chromosome number within the daughter cells produced at the end of the meiosis is one- half that of the mother cell that underwent meiosis I.

19. E) can consist of a single chromatid or 2 sister chromatids.

20. E) Diploid chromosome number of 6 and anaphase I of meiosis.

21. C) mitochondria; chloroplasts

22. C) tetrasomy

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