Accumulated changes in an individual are passed on to its offspring is the argument of Lamarck's theory of evolution which was incorrect and is option D.
Wisemen discarded the above-mentioned statement and gave the concept of germ cells and somatic cells. Also, he conducted an experiment in which he removed the tails of rats for 22 continuous generations, but it was noticed that the rats of the 23rd generation were still born with a tail.
This proved that the changes were occurring in somatic cells which are not responsible for changes in the offspring. The actual changes in the offspring are due to mutations occurring in the germ cells, so Lamarck's theory was discarded.
To learn more about Lamarck's Theory:
THE ANSWER IS
mutualism
Answer:
All of the above are true.
Explanation:
Microbial cells are surrounded by the plasma membrane or cytoplasmic membrane. It serves as a selective barrier allowing materials in and out of the cell e.g. allowing nutrients in and waste out.
Microbial cells grow independently, in that they are unicellular, and so do not depend on the other cells to carry out the process. However, they rely on nutrients, and in some environments, these may be nutrients produced by other organisms.
Microbial cells are unicellular, although some microorganisms are multi-cellular. Microorganisms such as bacteria are unicellular, that is, exist as single cells.
Bacteria and viruses are microorganisms.
Answer:
meiosis
Explanation:
Down syndrome is an abnormality that occurs on chromosomes 21, it occurs because chromosomes 21 cannot be separated in meiosis, the pair of chromosomes 21 do not separate and go together to one of the daughter cells. In this way, the oocyte or the resulting sperm will have 24 chromosomes instead of 23. When in conception that oocyte or sperm joins the germ cell of its partner that contributes the 23 chromosomes, the total sum of chromosomes that will have the first cell of the new conceived being will be 47.
Answer:
The mutation observed in the down syndrome occurred as a result of a abnormal and non disjuncted meiosis.
Explanation:
Howbeit, mutation can be described as any heritable change of the base-pair sequence of genetic material.
Down syndrome also described as trisomy 21 is a medical condition caused by a chromosomal excess, whereby the patients bear a certain resemblance to the Mongoloid race, such as a small head and tilted eyelids, and typically have a delay in cognitive ability and physical growth.
Meiosis is one that describes the cell division process of a diploid cell into four haploid cells, which develop to produce gametes.
The chromosomal mutation of nondisjunction in down syndrome describes how a pair of chromosomes is not fully separated during meiosis, resulting in the gamete having an extra chromosame (or none at all).
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Bill needs to solve a system of linear equations based on the nutritional content of each food item in order to find out how many cups of rice, tofu, and peanuts he should consume to meet his specific nutritional goals. Keep in mind the caloric density of foods and the importance of a balanced diet.
To determine the number of cups he should eat, we would first need to set up a system of linear equations based on the nutritional content of each food item.
Let's denote R as the number of cups of rice, T as the number of cups of tofu, and P as the number of cups of peanuts. From the information given, we can create these equations:
42R + 4T + 34P = 350 (for carbohydrates)
0R + 11T + 75P = 311 (for fats)
1R + 23T + 35P = 168 (for proteins)
He needs to solve this system of equations to get the values of R, T, and P. Keep in mind, nutritional goals are important but it's also vital to consume foods high in micronutrients, fiber and have a balanced diet. Remember that fatty foods are calorie-dense compared to carbohydrates and proteins, meaning they have more calories per unit mass. This can be a healthy and sustainable meal plan for Bill if he also incorporates sufficient fruits, vegetables, and exercises regularly.
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