Answer:
Alleles that are rare in the ancestral population (Germany) become common in the new population by random chance.
Explanation:
The founder effect is the change in the allele frequencies of a population by a chance event when a small group of individuals migrate from the large original population and colonize a new region. The gene pool of the Amish population is quite different from the original population as the colonizing individuals did not carry all the alleles and genes present in the original population.
The founder effect results in the expression of harmful recessive alleles that were otherwise masked in the heterozygous genotype of the original large population. Small colonizing population exhibits increased homozygosity and reduced genetic variations leading to the expression of rare diseases that were masked by heterozygosity in the large parent population.
A knife that penetrates the lung and enter the heart would first enter:
(1) parietal pleura
(2) visceral pleura
(3) visceral pleura
(4) parietal pleura
(5) fibrous pericardium
(6) serous pericardium
The first membrane, parietal pleura is the outer covering of the lungs and it attaches to the thoracic cage. The next membrane, visceral pleura is the inner covering of the lungs. The fibrous pericardium, like the parietal pleura, is the outer covering of the heart which anchors the heart to the diaphragm and sternum. The serous pericardium, which is made of two layers, is the inner covering and lines the surface of the heart.
Learn more of membranes from:
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Bacteria are unicellular microorganisms that can be found everywhere in the environment. Viruses are microorganisms that can only reproduce within the cells of a host organism.
The differences between viruses and bacteria include;
- Viruses do not have any cell and are considered between living and non-living things, while bacteria have one cell (Unicellular) and are living organisms.
- Viruses are smaller in size (20-400 nm) when compared with bacteria (1000 nm).
- Viruses do not have a cell wall but a protein coat is present, while bacteria have a cell wall that is composed of peptidoglycan.
- Viruses require a living cell to reproduce, while bacteria can reproduce by itself.
- The DNA or RNA of viruses is enclosed inside a coat of protein, while that of bacteria floats freely in the cytoplasm within the cell.
It should be the trophic level..
The definition of an ecological relationship is the relationship between organisms in an ecosystem, so you can find them in almost any ecosystem.
