A population continues at a stable size for many years. Suddenly, in a single season, the population size drops by half. Is the cause more likely to be density-dependent, density-independent, or both? Explain your answer.

The body of a tiger is made of many types of cells, such as muscle cells and nerve cells. All of the tiger's cells are eukaryotic. What else is true about the tiger's cells?

The process represented in the diagram produces a molecule that is complementary to the template strand of dna. what type of molecule is produced

What do we get from cereals, pulses, fruits and vegetables

The CFTR protein is made up of 1,480 amino acids linked together in a chain. Some humans produce a version of the CFTR protein in which phenylalanine (an amino acid) has been deleted from position 508 of the amino acid chain.

Even though it is the phenotype that is exposed to a particular environment, the genotype frequencies of a population can change over time. explain.

The DNA in a cell's nucleus encodes proteins that are eventually targeted to every membrane and compartment in the cell, as well as proteins that are targeted for secretion from the cell.

What similarity do animals and plants share?

This is a model of a bacterial cell. What statement about the structure and function of bacterial cell parts is correct? A) DNA is contained in a primitive nucleus. B) Energy for movement is generated in the pilli.

How can the locations where ancient fossils are found be used as evidence for continental drift

Many songbirds breed in North America in the spring and summer and then migrate to Central and South America in the fall.