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Answer:
Only mRNA can be used to repair mistakes in the DNA sequence.
Explanation:
un animal es como una jirafa o un pez o un perro etc. pero tambien ay animales invertebrados o vertebrados
vertebrados se inifica que tiene un esqueleto interno articulado lo que ucal permite que se puedan mover , ejemplos de animals vertebrados son un pinguino elefante cocodrilo perro etc
invertebrado se inifica que son animales que no tienen colbna vertebral ejemplos son mariposas ,gusanos ,medusas ,caracoles etc
ojala te ayude jjejejej
Answer:
C. Shared characteristics
Explanation:
Generally, living organisms are classified into groups based on their characteristics. Organisms that possess same or similar characteristics are grouped together while those that possess different characteristics are grouped separately.
Classification of living organisms include seven (7) levels of organization namely: kingdom, phylum, classes, order, families, genus, and species. Kingdom represent the MOST INCLUSIVE while species represent the MOST EXCLUSIVE i.e. contains the fewest members considering the fact that organisms with the most shared characteristics are grouped as species.
Answer:
a regulatory protein binds to DNA which blocks transcription
Explanation:
Negative control of gene expression includes the binding of certain regulatory proteins to the regulatory sequences. This binding prevents the expression of certain sets of the gene. For instance, binding of repressor protein to the operator sequence of lac operon prevents the expression of structural genes of the operon. This pattern of gene regulation is called negative regulation. The binding of the repressor to the operator sequence does not allow the RNA polymerase to transcribe genes since the operator and promoter (binding site for RNA polymerase) sequences are present in close vicinity.