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PilotLPTM [1.2K]
3 years ago
9

Describe the makeup of volvox

Biology
1 answer:
AnnZ [28]3 years ago
4 0
Volvox is a polyphylectic genus of the chlorophyte family.
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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
What can be used to measure the rate of photosynthesis
zloy xaker [14]

Answer:thus, there are various methods to measure photosynthesis:

Uptake of CO2 by plants: Since CO2 is needed for photosynthesis, measuring how much of it is taken up by the plants gives us information on how much of photosynthesis is happening.

Release of O2: The amount of O2 produced during photosynthesis can be measured.

Explanation:

7 0
3 years ago
Why are lethal dominant alleles so much more rare than lethal recessive alleles?
juin [17]

Lethal alleles cause the death of an organism prenatal or after the birth. Lethal alleles are usually a consequence of a mutation and they can be recessive, dominant or conditional. Since the lethal dominant alleles are harmful whether they are carried in homozygous (e.g.AA) or heterozygous (e.g.Aa) form,  a strong selection against them is present and thus these alleles are much more rare.

5 0
2 years ago
In which structure in the nucleus are ribosomes made?
iragen [17]

nucleolus

they are made up of subunits and these subunits are made within the nucleus by the nucleolus. Then they are assembled in the matrix of the nucleus.

7 0
3 years ago
Taste molecules are unique because different molecules trigger _______ in the nose and mouth
Kazeer [188]

Answer:

taste and smell

Explanation:

triggers taste

example

hold your nose put a fruit candy in your mouth you will notice there will be a slight different taste

these molecules trigger basic taste

4 0
3 years ago
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