At which developmental stage should one be able to first distinguish a diploblastic embryo from a triploblastic embryo?

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#Question id: 5545

#5. Developmental Biology

The placenta functions as a(n):

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#Question id: 5330

#8. Inheritance Biology

First child of both affected couple has normal, an autosomal dominant disorder. What is probability of second child of this couple would have diseased?

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#Question id: 11582

#7. System Physiology – Animal

Following a stressful stimulus, the fight-or-flight response will cause ________.

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#Question id: 12627

#6. System Physiology – Plant

Strigolactones are synthesized from β-carotene,  synthesis of the intermediate carlactone, beyond which strigolactone biosynthesis diverges is takes place____

a) in a species-specific manner

b) in Non-species specific manner

c) Divergence is attributed to the functional diversity of MAX1 cytochrome P450 isoforms, which act on carlactone

d) Divergence is attributed to the functional diversity of MAX1 cytochrome P450 isoforms, which act on 5-Deoxystrigol

Which of the following combination from the above statement is true?

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#Question id: 4589

#11. Evolution and Behavior

Darwin used the phrase "descent with modification" to explain ________.