Influenza virus

Influenza are surrounded by an outer envelope, a lipid bilayer derived from the plasma membrane of the infected cell.

Viral specific Protein 

Hemagglutinin (HA) 

Neuraminidase (NA)

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#Id: 8428

#XL - T Zoology

Natural selection will favor those individuals that allocate their resources in a way that achieves maximum fitness.

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#Id: 8429

#XL - T Zoology

Trade off - A giving up of one thing in return for another.

Causes of trade off

More mortality in their offspring 

Limitation of food

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#Id: 8430

#XL - T Zoology

1. OFFSPRING NUMBER VERSUS OFFSPRING SIZE

2. OFFSPRING NUMBER VERSUS PARENTAL CARE

3. FECUNDITY AND PARENTAL CARE VERSUS PARENTAL SURVIVAL

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#Id: 8431

#XL - T Zoology

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#Id: 8432

#XL - T Zoology

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#Id: 8433

#XL - T Zoology

Type of iteroparity

Seasonal iteroparity - have distinct breeding seasons 

Continuous iteroparity- reproduce at any time of the year.