They form hydrogen bonds between opposing dna which forms the twister ladder of dna
Reviewing of articles summarizes the current state of understanding on a topic within a certain discipline.
<h3>What is an article review?</h3>
This is a type of professional paper writing which demands a high level of in-depth analysis and a well-structured presentation of arguments and a critical evaluation of literature in a particular field through summary, classification, analysis, and comparison.
<h3>Introducing the main idea of an article:</h3>
The first sentence should explain the subject being discussed in the passage.
A signal phrase is a short introductory phrase that indicates that a quote or paraphrase is coming. To introduce a signal phrase, you provide an effective transition between your own ideas and the evidence used to explore your ideas.
To include a quote, use the author's last name and the page number from which the quotation or paraphrase is taken.
To include a sentence which discusses the quote chosen, you:
- Use a full sentence followed by a colon to introduce a quotation.
- Begin a sentence with your own words, then complete it with quoted words.
- Use an introductory phrase naming the source, followed by a comma to quote a critic or researcher.
Hence, a review article is generally considered a secondary source since it may analyze and discuss the method and conclusions in previously published studies.
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Answer:
The geranium is a vascular plant and has a long life
cycle
Explanation:
Geranium is a species of plant that is genus in the plant kingdom that has several annual and perennial species that are more than 400. Geranium is classified under the subkingdom known as "Tracheobionta", and as such could be referred to as plants that are vascular.
Invariably, geranium which are vascular plants that are often cultivated as horticultural shrubs are long-lived plants, and also have many species that are perennial.
Therefore, we can infer that "the geranium is a vascular plant and has a long life cycle.
The recombination frequency of the two gene pairs is 3%.
The number of recombinant offspring(r.o.) / total number of offspring x 100% = recombination frequency(θ):
r.o./total x 100% = θ
30/100 x 100% = 3%
Recombinant offspring are children that have a different allele combination to their parents.
For example, say a mother has a haploid cell with the alleles AB and the father has a haploid cell with the alleles ab. These combine to make a diploid cell with the sequence Aa+Bb.
Formation of Recombinant Offspring :
Recombination can happen in two different ways; independent assortment and crossing over.
- Independent assortment is when the maternal and parental DNA are mixed during meiosis, creating a new gene sequence.
- Crossing over happens during the first stage of meiosis when the two homologous chromosomes are paired and a portion breaks off on the same loci then reconnects to a different end. Crossing over can only happen when there isn't a physical linkage of the parental alleles.
Recombination frequency (θ) is the frequency with which a single chromosomal crossover will take place between two genes during meiosis. A centimorgan (cM) is a unit that describes a recombination frequency of 1%. In this way we can measure the genetic distance between two loci, based upon their recombination frequency. This is a good estimate of the real distance. Double crossovers would turn into no recombination. In this case we cannot tell if crossovers took place. If the loci we're analysing are very close (less than 7 cM) a double crossover is very unlikely. When distances become higher, the likelihood of a double crossover increases. As the likelihood of a double crossover increases we systematically underestimate the genetic distance between two loci.
When two genes are close together on the same chromosome, they do not assort independently and are said to be linked. Whereas genes located on different chromosomes assort independently and have a recombination frequency of 50%, linked genes have a recombination frequency that is less than 50%.
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<span>Which type of gland produces hormones? which type of gland produces hormones? unicellular exocrine glands halocline glands endocrine glands multicellular exocrine glands?
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