Draw two cells: one showing the arrangement of chromosomes at metaphase of mitosis, and the other showing the
chromosomes at metaphase I of meiosis. What is the significance of this difference? What will be an ideal response?
The drawing should resemble Fig. 10-6d (for mitosis) and Fig. 10-16 (for meiosis). In
mitosis, the homologous chromosomes line up singly on the cell’s midplane whereas in
meiosis the homologous chromosomes line up as pairs. This arrangement in meiosis is a
necessary preparation for the following stage (anaphase I) in which the homologous pairs
separate, thus leading to the halving of chromosome number in the daughter cells.
You might also like to view...
A transmembrane protein differs from other membrane proteins because it:
a. is covalently linked to the outer surface of the plasma membrane. b. is a glycoprotein with carbohydrates attached. c. is attached to the inside of the membrane by an ionic bond. d. completely extends through the membrane. e. is completely embedded within the membrane
Any substance that produces an inappropriate response of the immune system is referred to as a(an)
A) allergen. B) antibody. C) plasma cell. D) allergy. E) perforin.
Which of the following statements regarding an atom with high electronegativity is true?
a. It will have fewer protons than an atom with low electronegativity. b. It will have a tendency not to attract electrons. c. It will most likely be located on the left-most side of the periodic table of elements. d. None of these choices are correct. e. All of these choices are correct.
Robert Koch developed a vaccine that could be used to prevent anthrax.
Answer the following statement true (T) or false (F)