One group of ecologists has suggested that producers are limited by competition for resources, primary consumers (herbivores) are limited by predation, and secondary consumers (carnivores) are limited by food. If this were true, at which of the following trophic levels would one expect to find substantial evidence for competitive exclusion?

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#Question id: 18964

#Unit 13. Methods in Biology

Size of agrobacterium can be reduced by binary vector formation; these binary vectors can be formed by phenomenon of

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#Question id: 18969

#Unit 8. Inheritance Biology

Consider the ABO “blood type” gene. This single gene has three alleles called A, B, and O. There are four resultant “blood types” (phenotypic classes), as follows:C

                               

Assume Hardy-Weinberg equilibrium. In Norway, the frequencies of the A and B alleles are 0.26 and 0.07, respectively. What is the frequencies of these six genotypes (AA, AO, BB, BO, AB, and OO);

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#Question id: 18970

#Unit 8. Inheritance Biology

Consider the ABO “blood type” gene. This single gene has three alleles called A, B, and O. There are four resultant “blood types” (phenotypic classes), as follows:

                                     

Assume Hardy-Weinberg equilibrium,  the frequencies of the A and B alleles are 0.26 and 0.07, respectively. What is the frequencies of the four blood types such as A, B, AB  and O in Norway;

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#Question id: 18971

#Unit 9. Diversity of Life Forms

The following are all true about the life cycle of mosses except

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#Question id: 18972

#Unit 9. Diversity of Life Forms

Beginning with the germination of a moss spore, what is the sequence of structures that develop after germination? 

1. Embryo                  2. Gametes 

3. Sporophyte 4. Protonema 

5. Gametophore 

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#Question id: 18973

#Unit 9. Diversity of Life Forms

Bryophytes may feature all of the following at some time during their existence except