Soil is dense but not too dense to support the roots and plants, and soil absorbs water and holds it for the plant. and soil also soaks up nutrients for the plant, and also microorganisms in the plants replenish the nutrients constantly in a cycle, so soil is always nutrient rich
Answer:
Cluster
Explanation:
A cluster is the largest gravitationally bound object in the universe.
Answer:
AB, Ab, aB, ab.
Explanation:
Crossover may be defined as the process of exchange of the genetic material between the non sister chromatids of two homologous chromosomes. This process occurs at the prophase I of meiosis.
The one chromosome carries A and B genes and the homologous chromsome carries same genes, a and b. The single cross over has occur so two parental gametes are formed (AB, ab) and two gametes are recombinant (aB and Ab).
Thus, the answer is AB, Ab, aB, ab.
Sequences that contain information about the stability of a transcripts are found in the 3 UTR sequence of mRNA. The 3 UTR is made up of binding sites for regulatory protein and also contain AU rich elements. Proteins usually bind to AU rich elements in order to affect the stability or decay rate of a transcript.
The main difference between them is their size.