Answer:
Chemically altered nucleosides derived from canonical ribo-or deoxyribonucleoside-derivatives of adenosine, cytosine, guanosine, and uridine or thymidine are found in all types of nucleic acids, DNA and RNA. They are particularly abundant in noncoding RNAs, such as transfer RNAs and ribosomal RNA of higher organisms. By increasing the structural diversity of nucleic acids, modified nucleosides play important roles in gene expression and in regulating many aspects of RNA functions. They also contribute to nucleic acid stability and to protection of genetic materials against virus aggression. In this chapter we present a historical overview of the discovery, occurrence, and diversity of the many naturally occurring modified nucleosides that are present in both DNA and RNA of diverse organisms. We also briefly describe the different enzymes that accomplish these nucleic acid ‘decorations’. More information about the structure, function, biosynthesis and evolutionary aspects of selected modified nucleosides in DNA and RNA and their corresponding modification enzymes can be found elsewhere in this volume.
Explanation:
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<span>The word part haimato is the Greek root for blood. the word means "the science that encompasses the anatomy, physiology, and pathology of blood is the hematology
so correct option is B
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A - may include physical intimacy
B- involves people who are related by marriage or adoption
Answer:
Effects and causes of teenage pregnancy
Risk Factors for Teenage Pregnancy
Single parent households.
Single mothers' dating behaviors.
Lack of positive family interaction.
Lack of parental supervision.
Lack of positive parent-child communication.
Mother was a teen parent.
Explanation:
Effects and causes of teenage pregnancy
Risk Factors for Teenage Pregnancy
Single parent households.
Single mothers' dating behaviors.
Lack of positive family interaction.
Lack of parental supervision.
Lack of positive parent-child communication.
Mother was a teen parent.