The figure below illustrates the relationship between population density in the present generation (Nt) and population equilibrium density of this population in the next generation (Nt+1). The dashed reference line has a slope of 1. Which of the following represents equilibrium density of this population?

#Question id: 4573

#Unit 11. Evolution and Behavior

Which of the following pieces of evidence most strongly supports the common origin of all life on Earth?

#Question id: 3649

#Unit 3. Fundamental Processes

In eukaryotes, clusters (tandem arrays) of about 20–50 replicons initiate simultaneously at defined times throughout:

#Question id: 3417

#Unit 11. Evolution and Behavior

In balancing selection, two or more alleles are kept in balance, and therefore are maintained in a population over the course of many generations. Which of the following example can support balancing natural selection?

A- Sickle cell allele kept in balance because heterozygotes have greater chance of survival if infected by the malarial parasite, compared with normal homozygotes

B. One morph has selective advantage over another morph

C. One homozygote has greater chance of survival than other genotype results in purity of population

D. many species of invertebrates exist as different colored forms, identical in all respects except color. Visually searching predators often develop a search image for one color form, usually the commoner

#Question id: 4581

#Unit 11. Evolution and Behavior

The Linnaeus classification system grouped organisms by ________.

#Question id: 716

#Unit 1. Molecules and their Interaction Relevant to Biology

In beta turns which amino acid is not allowed at i and i+3 position?