The portion of the blastoderm-stage embryo which will give rise to most ectodermal, mesodermal, and endodermal tissues is called the:

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#Question id: 1065

#XL - T Zoology

Resistance of some animals to certain viral diseases is based on

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#Question id: 1066

#XL - T Zoology

Carriers

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#Question id: 1067

#XL - T Zoology

The best known chronic infection involves

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#Question id: 1068

#XL - T Zoology

The best-known examples of viruses that cause latent infections are

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#Question id: 1069

#XL - T Zoology

Diseases of short duration frequently followed by long-term immunity are referred to as

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#Question id: 1070

#XL - T Zoology

Genetic exchange in segmented viruses that allows a zoonotic virus to infect humans is termed