Cell expansion in plants require enzymes to loosen the existing cell wall and produce new material. Can you think of a mechanism which causes the loosening of the cell wall?

Dna is colied into chromosomes in a cell

In what part of the body does the most muscle activity happen?

In a population that is in hardy-weinberg equilibrium, there are two possible alleles for a certain gene, a and a. if the frequency of allele a is 0.4, what fraction of the population is heterozygous? a. 0.40 b. 0.60 c. 0.16 d. 0.48