Industrial revolution is when people started making a bunch of factories.
It affected the color of dark colored moths because they were able to camouflage into their environment better because of the soot from the factories, therefore increasing the number of dark moths that survived in their environment over light colored moths.
Natural selection is when the environment and environmental factors affect an organisms ability to survive and reproduce in that environment, causing only the most fit organisms to be able to survive and reproduce.
Answer:
A compound is made up of atoms of different elements combined together in a chemical reaction with fixed ratio and in a defined manner via chemical bonding.
Elements on the other hand are pure chemical substance made of same type of atom.
The properties of the compound is related to the ratio of elements in a way that the elements individual properties will manifest itself in the compound giving it a hybrid property.
Answer:
a. There are different possible ways that homologous pairs might line up
c. Different alignments of homologous pairs will cause different combinations of alleles in gametes.
Explanation:
The law of independent assortment, proposed by Mendel, states that the alleles of one gene segregate into gametes independently of the alleles of another gene. This means that the segregation of one gene does not affect another. This law of independent assortment is evident during gamete formation in sexually-reproducing organisms know as meiosis. Specifically, in the Metaphase 1 stage of meiosis 1, homologous chromosomes (similar but non-identical chromosomes received from each parent) lines up at the metaphase plate (cell equator).
The lining up of chromosomes in this stage occurs randomly making it possible for chromosomes to align in different possible ways. The way/manner the chromosomes align at the equator determines which chromosome combination gets separated into which gamete. The homologous chromosomes are randomly distributed at the cell's equator before segregates into gametes. This random orientation enables the alleles of each gene on a chromosome to combine in different random ways, hence, allowing genetic diversity in the resulting gametes (sperm and egg) they get segregated into.
The tricuspid valve shuts. This prevents blood from flowing backward into the right atrium while the ventricle contracts. So, your answer will be the Tricuslid Valve. Hope I helped!
<span>hello there hester , i would say needed to form cell membranes</span>
