If the S-A node discharges at 0.00 seconds, when will the action potential normally arrive at the AV bundle (bundle of His)?

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#Question id: 6991

#5. Developmental Biology

Metamorphosis of amphibians is triggered by environmental cues that act on the:

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#Question id: 6992

#5. Developmental Biology

Epimorphosis is regeneration through:

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#Question id: 6994

#5. Developmental Biology

Puberty is initiated by pulse release of _____________(hormone)

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#Question id: 7286

#5. Developmental Biology

Which of the floral whorls is affected in apetala 3/pistillata (ap3/pi) mutants?

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#Question id: 7289

#5. Developmental Biology

The following scheme shows the flowering status of a plant species and the photoperiodism. Which of the following conclusions is most appropriate?

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#Question id: 7291

#5. Developmental Biology

Five different genes are known to specify floral organ identity in Arabidopsis: APETALA1 (AP1), APETALA2 (AP2), APETALA3 (AP3), PISTILLATA (PI), and AGAMOUS (AG).

Which one of the following statement is incorrect?