4. One form of a gene that is passed down from each parent to form the offspring's genotype is a(n) A. nucleus
C. DNA
B. allele
D. chromosome

Q: a pair of homologous chromosomesa) always has the same genes and the same allows b)always has the same genes c)always has the same alleles d)never has the same genes

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.