Polyploidy is characterized by ____
a. the failure of homologous chromosomes to separate properly during meiosis
b. a condition in which one chromosome is present in three copies
c. a condition in which one member of a chromosomal pair is missing
d. a chromosomal number that is not an exact multiple of the haploid set
e. a chromosomal number that is a multiple of the normal haploid chromosomal set
e
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Consider the data in Fig. 46.8 illustrating the age structure of France and India. In many parts of the world, the average age of reproductive maturity is increasing as humans move from urban to rural environments
Suppose that the current average age of first reproduction is 15 years in India and 20 years in France. How would a 5-year increase in the average age of reproductive maturity in both countries be expected to affect the per capita birth rate, and would this effect be greater in France or in India? A. increase in per capita birth rate, greater effect in India B. increase in per capita birth rate, greater effect in France C. decrease in per capita birth rate, greater effect in India D. decrease in per capita birth rate, greater effect in France
Bacteria group their genes such that they share a single promoter and the mRNA transcript synthesizes several different polypeptides. Collectively, these are referred to as ________ mRNAs, which are part of the operon system
Fill in the blank(s) with correct word
Members of phylum __________ are the most primitive of the fungi and were previously classified as
protists. a. Chytridiomycota b. Zygomycota c. Glomeromycota d. Ascomycota e. Basidiomycota
Only one mode of exercise is recommended for cardiorespiratory fitness.
a. true b. false