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Nataliya [291]
3 years ago
10

Can someone help me on those questions

Biology
1 answer:
Inessa05 [86]3 years ago
5 0
1). A good example for mutualism is People and plants.  We provide plants Carbon dioxide.  Plants provide us Oxygen 
2).Biome is where you have your tundras, Rain forests, Deserts, etc.  then you have to give 3 characteristics like temperature, precipitation levels, soil type, etc.
I will have to get to question 3 later since im in class but ill give you the answer to that one.  its easy
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Why are some diseases more common in certain groups of people, such as caucasians or African Americans
Anna71 [15]

Answer:

Some diseases are more common in certain groups of people, such as Caucasians or African Americans because individuals in such ethnic groups often share certain alleles (versions of their genes), that have been passed down to them from common ancestors and a particular genetic disorder may be more frequently seen in such groups if one of these shared genes contains a disease-causing mutation.

Explanation:

Some genetic diseases are frequently seen in certain ethnic groups like Caucasians or African Americans. Individuals in such groups often share certain alleles (versions of their genes), that have been passed down to them from common ancestors and one of these shared genes may contains a disease-causing mutation.

Examples of certain genetic disorders that are more common in particular ethnic groups include the Tay-Sachs disease, which is more common in people of eastern and central Europe (Ashkenazi), Jewish or French Canadian ancestry and the sickle cell disease, which occur among people of African, African American, or Mediterranean heritage.

Some genetic disorders are more common in people whose ancestry can be traced to a particular geographic area. The factors that can lead to development of populations with very different genetic allele frequencies include their geographic origin, selection, patterns of migration, historic events, etc. Certain natural barriers like oceans and other water bodies, high mountains, large deserts, or major cultural factors had prevented communication and interaction between people. So mating was restricted within the group, and this produces genetic marker differences and differences in the presence of specific disease-related alleles.

6 0
3 years ago
Suppose that a cell has 20 chromatids at prophase of mitosis. After mitosis and cytokinesis end, the two resulting daughter cell
EleoNora [17]

Answer:

20

Explanation:

Mitosis is a process in which a cell produces an exact copy of itself. The 2 daughter cells produced from mitosis have the same number of chromatids as the parent cell.

8 0
3 years ago
Plot each date on the map Describe jamurs overall path
timurjin [86]

Answer: lol

Explanation:

4 0
3 years ago
Read 2 more answers
How do mutual ism and parasites compare
natita [175]
Mutualism is when two organisms are involved and they both benefit where as parasites is when two organisms are involved, but one is benefitted while the other is harmed.

-Hope I helped!
4 0
3 years ago
Which of the following is a radially symmetrical animal with stinging tentacles?
madreJ [45]
The answer is B. Cnidarians

Cnidarian body has no left or right side, only tom and bottom surfaces. If you divide cnidarian a about central point, you will get equal parts. So, cnidarians are radially symmetrical animals. This group includes hydroids, jellyfish, anemones, and corals. In all groups, animals have stinging cells on tips of tentacles. They use them to capture the prey. Their name literally means stinging creatures.
6 0
3 years ago
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