What is meant by the terms acentric and dicentric?
What will be an ideal response?
A chromosome without a centromere is acentric; a chromosome with two centromeres is dicentric.
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_______________ are chemical substances produced in small quantities in one part of an organism and then transported to another part of the organism, where they bring about physiological responses.
A. Glycoproteins B. Photosynthates C. Hormones D. Heat shock proteins E. Pulvini
In rapidly dividing cells, expression of BRCA1 and BRCA2 genes is the highest during the ____
a. mitosis to cytokinesis transition b. G1/S transition and into S phase c. G2/mitosis transition d. S/G2 transition e. metaphase to anaphase transition
What did the researchers conclude from the data shown in the figure? Select one:
a. Resistance to Bt toxin is not genetic. b. Resistance to Bt toxin is recessive. c. The size of larvae is dependent on treatment with Bt toxin. d. The number of larvae is dependent on treatment with Bt toxin. e. Resistance to Bt toxin is dominant.
________ are bone-absorbing cells and ________ are bone-forming cells.
A. Osteoclasts; osteoblasts B. Chondrocytes; lymphocytes C. Eosinophils; red blood cells D. Osteocytes; osteons E. Menisci; osteoclasts