Interestingly, Myrmecia pilosula was originally described as a single species; but it actually consists of several distinct, closely related species with females having diploid chromosome numbers of 18, 20, 32, 48, 60, 62, and 64. Yet all the ants look pretty much alike! Assume that a cross occurs between a female of Myrmecia species (A) with 32 chromosomes and a male Myrmecia species (B) with 9 chromosomes (remember, males are haploid and transmit all their chromosomes to each sperm cell). How many chromosomes would be expected in the somatic (non-gametic) cells of the hybrid females?

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Destruction of the alveolar walls, leading to large, permanently inflated alveolar air spaces is called:

To which site does colon cancer usually first metastasize?

Laryngotracheobronchitis is typically manifested by:

The use of a continuous positive airway pump in the treatment of sleep apnea will:

Which type of fracture typically occurs at the base of the skull?

Which of the following individuals is NOT considered to be at high risk for developing active tuberculosis?

What are early signs and symptoms of infectious rhinitis?

Lobar pneumonia is usually caused by: