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slamgirl [31]
3 years ago
9

Why some pigments (in plants with more than one) move further than others?

Biology
1 answer:
densk [106]3 years ago
7 0
Chromatography is a method of separating the components of a mixture over time. Chromatography has allowed for the discovery of many specialized pigments<span>, including at least five </span>forms<span> of chlorophyll. </span>
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For plants and other organisms to develop differences among their respective species the alleles of their genes must contain var
olasank [31]

A) <u>Mutation</u> is the original source of variations for plants and other organisms  which develops differences among their respective species

Explanation:

Genetic variation leads to the natural differences between each individual and among individuals of a species. The main cause for this variation is due to alleles that cause variations in the composition of genes or the DNA sequences.  

A mutation is a genetic variation which leads to the creation of a new allele in a species population. Each variation in the DNA sequence leads to an allele formation and each allele leads to a difference in character or trait between individuals since they are the alternate version of the original genes.  

Although genetic variations could be brought about by crossing over, random fertilization, or independent assortment; mutation is the original source because it provides the basic raw material for all the evolutionary changes.

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True or false. Is sympatric speciation, a physical barrier arises and separates two populations l, ending flow between them
timofeeve [1]
<h3><u>Answer;</u></h3>

The above statement is <u>False </u>

<h3><u>Explanation;</u></h3>
  • Speciation is an evolutionary process in which new species arise. There are three types of speciation, namely; sympatric, parapatric and allopatric speciation.
  • <em><u>Sympatric speciation is a pattern in which speciation occurs in the absence of a physical barrier to gene flow; ex. polyploidy arising in flowers.</u></em>
  • In an Allopatric speciation on the other hand, a physical barrier arises and separates two populations, ending gene flow between them and allowing reproductive isolating mechanisms to evolve so that later if the two groups come back into contact they will no longer be able to reproduce together, therefore making them different species.
7 0
3 years ago
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Residents of three villages with three different sources of water supply were asked to participate in a survey to identify chole
lubasha [3.4K]

Answer:

<em>a. Cross-sectional study</em>

Explanation:

A cross-sectional analysis <em>includes at one particular point in time looking at data from a population.</em> Participants are chosen based on specific variables of interest in this type of study.

For developmental psychology, cross-sectional experiments are often used, but this approach is also used in many other fields, including social science and education.

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3 years ago
An amino acid is synthesized by the prokaryote, E. coli. The genes for the enzymes are responsible for synthesizing this amino a
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The answer is when levels of the amino acid are high, it binds to the repressor, ending the synthesis of this amino acid

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