Answer:
R masks —or covers— r, so it only needs one copy to express its phenotype. This means it is the <u>dominant</u> allele.
Explanation:
In genetics, alleles are the members of an allelic pair that contain the genetic information related to a specific characteristic.
The dominant allele is one whose presence is sufficient to mask the expression of a recessive allele, so the phenotype shown is the dominant one.
A recessive allele needs to be present in both components of the allele pair in order to be expressed in the phenotype.
Spontaneous generation is the supposed production of living organisms from nonliving matter, as inferred from the apparent appearance of life in some supposedly sterile environments.<span>
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Answer:
The answer is:
d. In every species, DNA is a simple repeating polymer made up of the same four nucleotides.
Explanation:
Chargaff’s rules are based in the quantitative relationship of the nucleotides (adenine, guanine, cytosine and thymine) that form part of the double strand of DNA.
One of the rules states that the amount of adenine (A) is the same as thymine (T), and that the amount of guanine (G) is the same as cytosine (C). A=T, G=C
Being said in another way: the total amount of purine bases it’s the same as the total amount of pyrimidine bases. (A + G= C + T).
The second rule states that the composition of DNA (the amount of nucleotides) is different from one species to other, but nor within species.
<span>c. Physical models are usually in the form of a graph.
Physical models represent and display certain paradigms and theoretical representations of how one mechanism functions or what is the components that make up an object, for instance. Hence, these aid scientists and other learners to have an overview of that is currently on the process. </span>
