Answer:
Option (C)
Explanation:
In a sedimentary sequence of rocks, when the rocks are subjected to stress (pressure) horizontally, then it gives rise to the formation of a series of folds, which are characterized by distinct crests and troughs, which eventually forms long ridges and valleys. These ridges and valleys are oriented in such a way that they are directly perpendicular to the direction of the horizontal stress applied on these rocks.
These folds are very prominent in nature sometimes but most of the time, in an outcrop, they are covered by other rocks and sediments. These folds can be microscopic to macroscopic in scale.
These are some of the most important structures found in the sedimentary rock types.
Thus, the correct answer is option (C).
Their absorption of iron can decrease.
B) biogeographic isolation affects the changes in gene pools that result from which organisms are breeding
C) biogeographic isolation determines who will win competition for mates
D) biogeographic isolation determines the time that populations will breed
Correct answer: A) bio-geographic isolation affects the random changes that take place within gene pools
The bio-geographic isolation of the species takes place when the geographical barrier work as a distinguishing agent. It takes place when the group of animals, plants and other creatures are not allowed to mate with each other.
The mixing of there genes within the same species is separated by the geographical barrier.
The barrier allows the mating of the species in a different way as compared to the previous one.
Biogeographic isolation allows for the change of gene pools over time as (A) biogeographic isolation affects random changes that take place within the gene pool.
Further Explanation:
Evolution is defined as the process of change in the heritable characteristics. This process takes over in time duration of a few generations. The heritable characteristics are the expressions of genes that are passed on from parents to offspring. Evolution may occur through various processes such as genetic drift, natural selection.
Genetic drift is defined as the variation of the relative frequency of varieties of genotype. There is a chance of disappearance of a particular trait from the population.
Natural selection is defined as a process that results in the adaptation of an organism to its environment in which the individual can reproduce and survive.
Gene pool refers to the collection of all available genes that are available to pass down from parents to offspring in the population of single species. The gene pool determines which phenotypes are present in the population at a given period.
Isolation refers to the process in which organisms of the same species are separated as a result of environmental change. This process occurs so that variation can be brought. When organisms become isolated the two groups are not able to reproduce together so, variations and mutations that are confined only to a group.
The following are the five types of isolation;
• Temporal isolation
• Behavioral isolation
• Ecological isolation
• Geographical isolation
• Mechanical or Chemical isolation
Biogeographic isolation refers to the separation of members of different species through geographical or biological barriers. This isolates the reproductive patterns of the members of the same population and results in the new way of mating in the isolated species. The species that are isolated genetically due to mutations and variations. These isolated groups evolved and lead to the formation of new species.
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Answer Details:
Grade: College Biology
Subject: Biology
Chapter: Evolution
Keywords:
Evolution, genetic drift, natural selection, gene pool, mutations, isolation, phenotype, variations, biogeographic isolation, ecological isolation, temporal isolation, behavioral isolation, mechanical isolation, geographic isolation.
B) Salt in the bloodstream causes fluids in the blood to leave and go to surrounding cells, due to osmosis.
C) People that take in too much salt will drink more water to balance out the salt, which raises blood pressure.
D) Extra salt solidifies in the bloodstream and blocks the blood vessels, causing them to narrow, and blood pressure to go up.
The right answer is A) Salt in the bloodstream causes fluids to enter the blood from surrounding cells, due to osmosis.
The circulatory system of the body is a highly flexible vascular system, which has the ability to open and distend new capillaries and veins in order to cope with an increase in fluid volume.
The term "Higher blood pressure" implies that an excess of salt leads to the retention of additional fluid within the arterial circulatory system, which would cause an increase in blood volume and add pressure to the walls. arteries.
High blood pressure is developed when someone takes excess of salt as salt in the bloodstream causes fluids to enter the blood from surroundings due to osmosis.
Further Explanation:
Osmosis is the process of movement of concentrations through a semi permeable membrane from lower concentration to higher concentration. When salt enters the blood stream, water draws out of all the cells through osmosis.
Diffusion is the process of movement of concentrations from an area of high concentration to low concentration. Diffusion is important process for living things as the gaseous and liquid substances move in and out of the cell.
Intake of high amount of salt is toxic to humans as it can cause risk of high blood pressure, stroke, heart attack, etc. Excess of intake of salt can cause a disease to bones known as osteoporosis.
High amount of salt intake draws water out of cell through osmosis due to which blood volume swells, adds pressure to blood vessels. Due to this, cell shrinks and DNA or proteins are damaged.
Learn more:
Answer Details:
Grade: High School
Subject: Biology
Chapter: Cells and osmosis
Keywords:
Blood pressure, blood stream, osmosis, concentration, semi permeable membrane, diffusion, cells, stroke, heart attack, osteoporosis, DNA, proteins.
The following choices are given;
A. XrXr. B. XrY. C. XRY D. XRXr
The answer is B. This is because the presence of the Y chromosome determines gender- which is male. In addition, it carries few genes than the X sex chromosome. Therefore, in this case, the X chromosome brings in the receive allele for eye color while the Y chromosome has no corresponding allele.
In most diploid organisms, they are two types of alleles for most genes which each on each set of chromosomes and at the same loci. In most cases, one allele is dominant over the other meaning that its presence masks the effect of the recessive allele. In the absence of the dominant allele, the recessive allele is expressed . Usually, the recessive gene is disadvantageous to the individual.