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#Question id: 3464

Adult male humans generally have deeper voices than do adult female humans, which is the direct result of higher levels of testosterone causing growth of the larynx. If the fossil records ofapes and humans alike show a trend toward decreasing larynx size in adult females and increasing larynx size in adult males, then

#XL - T Zoology

  1. sexual dimorphism was evolving over time in these species

  2. intrasexual selection seems to have occurred in both species

  3. stabilizing selection was occurring in these species concerning larynx size

  4. selection was acting more directly upon genotype than upon phenotype

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TLS Online TPP Program

#Question id: 3936

#XL - Q Biochemistry

The large RNA-protein complex that processes introns and exons is called __.
TLS Online TPP Program

#Question id: 11592

#XL - R Botany

Gibberellin biosynthesis precursor is____
TLS Online TPP Program

#Question id: 4589

#XL - S Microbiology

Darwin used the phrase "descent with modification" to explain ________.
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#Question id: 5695

#XL - T Zoology

Triploids are usually autopolyploids. They arise spontaneously in nature, but they can be constructed by geneticists from the cross of a 4n (tetraploid) and a 2n (diploid). Triploids are characteristically sterile due to
TLS Online TPP Program

#Question id: 18508

#XL - R Botany

During fields, the wheat may suffer from