Answer:
DNA replication is the process by which DNA makes a copy of itself during cell division.
Explanation:
The first step in DNA replication is to ‘unzip’ the double helix structure of the DNA? molecule.
This is carried out by an enzyme? called helicase which breaks the hydrogen bonds? holding the complementary? bases? of DNA together (A with T, C with G).
The separation of the two single strands of DNA creates a ‘Y’ shape called a replication ‘fork’. The two separated strands will act as templates for making the new strands of DNA.
True the answer is true. hope this helps
Answer:
The answer is letter C.
Explanation:
The spliceosome can not excise RNA sequences bounded by an upstream 5' splice site and a downstream 3' splice site.B
Because it is not possible to produce an mRNA with the composition Exon 1 Intron AExon 3, it would require the use of two 3' splice sites.
Answer:
d. alternation of generations
Explanation:
The alternation of generations is when an organisms lives a part of its life cycle being diploid and other part being haploid in a multicellular state. Plants such us as ferns (Pteridophyte) also have alternation of generations.
Environmental factors are more likely to affect phenotype than genotype.
Phenotype refers to the observable physical characteristics of an organism, a product of the genetic information contained in the genotype, in accordance with the conditions of the determined environment in which the organism lives.
- The phenotype supposes the manifestation of the genotype based on the environmental factors, the traits expressed by the phenotype are behavioral and physical.
- Regardless of the genotypic information manifested, environmental factors will also shape the phenotype of an organism, since it can suffer accidents, changes or adaptations that a genetically similar individual but in another environment would not suffer.
Therefore, we can conclude that the phenotype is the variable expression of a genotype in accordance with the environmental factors.
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