If C is dominant to c, what fraction of offspring will show the recessive phenotype when two heterozygous parents are
crossed?
a. 0/4
b. 1/4
c. 2/4
d. 3/4
e. 4/4
ANSWER: b
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Macroscopic examination of granules from lesions of mycetoma reveals them to be white to yellow and 0.2 to 2 mm in diameter. Microscopically, the granules consist of loosely arranged, intertwined septate hyaline hyphae cemented together. Which organism can cause a mycetoma infection?
a. Fonsecaea spp. b. E. dermatitidis c. Cladosporium spp. d. P. boydii
A cotyledon is which of the following?
a. embryonic root b. seed cover c. flower part d. seed leaf e. fruit
Which of the following is not true about the G + C content percentages in DNA of organisms?
A. Organisms with similar G + C percentages have similar base sequences. B. Similar G + C percentages only suggests relatedness if the two organisms are also alike phenotypically. C. Organisms with different G + C percentages have dissimilar base sequences. D. All of the choices are correct.
What are the three events that occur in sexual reproduction that increase genetic variability?
What will be an ideal response?