How many haploid sets of chromosomes are present in an individual cell that is tetraploid (4n)?

What will be an ideal response?


4

Biology & Microbiology

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In 1962, Rachel Carson authored a revolutionary book entitled The Silent Spring. This

publication dealt with the fact that many bird species in particular areas were not surviving because their shells were abnormally thin. The book title refers to the fact that with the decreasing bird populations, the springtime could indeed be “silent.” How would you go about discovering the cause of this anomaly? What changes do you think occurred as a result of Carson’s book?

What will be an ideal response?

Biology & Microbiology

How do flagella bend?

a. myosin motor proteins slide microtubules over each other b. dynein motor proteins slide microtubule doublets over each other c. myosin motor proteins slide actin filaments over each other d. microfilaments contract due to the action of kinesin e. actin filaments contract due to the action of myosin

Biology & Microbiology

Binding of one oxygen molecule to hemoglobin facilitates binding of the next two molecules; thus oxygen binding shows positive _______.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Would a water molecule be considered polar covalent or nonpolar covalent?

a) hydrogen b) ionic c) covalent d) polar covalent

Biology & Microbiology