Describe an amniotic egg. What is its evolutionary significance?
What will be an ideal response?
The shelled egg of amniotes contains the developing embryo along with its accompanying fetal membranes. It provides an aquatic environment for development that is independent of environmental water and is an adaptation for life entirely on land.
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Fatty acid tails
What will be an ideal response?
The Protenor mode of sex determination is the ________
A) XO/YY scheme B) scheme based on single translocations in the X chromosome C) XX/XO scheme D) hermaphroditic scheme E) scheme based on F plasmids inserted into the FMR-1 gene
Which of the following infectious disease transmission modes is not correctly paired with an example?
A) windborne: cholera B) breast milk: HIV C) flea bite: Plague D) touching: cat-scratch fever E) swimming: swimmer's ear
A (chronic/latent/sub-clinical) infection is one in which the microbe is actively reproducing but not causing symptoms.
Fill in the blank(s) with the appropriate word(s).