If the foods preferred by each species are found on different parts of the island, and if the flies mate and lay eggs on their food sources, regardless of the location of the food sources, then the speciation events involving these fly species may have been driven, at least in part, by which of the following?

#Question id: 10836

#Unit 10. Ecological Principles

Which of the following is an example of a plant morphological defence?

#Question id: 11951

#Unit 7. System Physiology – Animal

Very early in embryonic development, testosterone is formed within the male embryo. What is the function of this hormone at this stage of development?

#Question id: 903

#Unit 1. Molecules and their Interaction Relevant to Biology

Proteins segments which fold first can promote the folding of other sections of the protein into the native conformation by a process known as

#Question id: 5145

#Unit 5. Developmental Biology

Doris Taylor’s research group used detergents to remove all the cells from a cadaveric rat heart, which left behind the natural extracellular matrix. Proteins such as fibronectin, collagen, and laminin held together the rest of the extracellular matrix and maintained the intricate shape of the heart. The researchers then infused this extracellular matrix scaffold with cardiomyocyte progenitor cells. Surprisingly, these cells differentiated and organized into a functionally contracting “recellularized” heart. The behavior of extracellular matrix scaffold can promote the differentiation and rebuilding of a beating heart is analogous to which of the interactions?

#Question id: 11715

#Unit 10. Ecological Principles

The lifetime dispersal area of a particular species of drosophila is 0.2 km2. What else would we need to know to determine the neighbourhood size for this species?