In Drosophila, the female is the ________ sex

A) homogametic
B) mosaic
C) genic balance
D) heterogametic
E) isogametic


Answer: A

Biology & Microbiology

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Name and briefly characterize the four classes of fishes. Indicate which class is considered to be most similar to the ancestral chordate and which is the ancestor of the land vertebrates, justifying your choices

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What does the appendicular skeleton contain?

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Which of the following is a true statement concerning genetic variation?

a. it is created by the direct action of natural selection b. it arises in response to changes in the environment c. it must be present in a population before natural selection can act upon the population d. it tends to be reduced by the processes involved when diploid organisms produce gametes e. a population that has a higher average heterozygosity has less genetic variation than on with a lower average heterozygosity

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