All living organisms are composed of microscopic building blocks called cells, which are the structural and functional unit of life because this cell has many organelles and genetic materials that carry out different cellular functions.
The cell is the structural and functional unit of life, and it is microscopic in size. Cells join together to form tissue, and tissue joins together to form organs, which perform various functions in the multicellular organism.
The cell contains organelles such as the nucleus, which contains genetic components such as DNA. Genes that encode genetic information are present on the DNA, and depending on the gene, the cell does its function. The cell regulates both unicellular and multicellular organisms, maintains homeostasis, performs different functions, etc.
Hence, all living organisms are composed of microscopic building blocks called cells, which are the structural and functional units of life and consist of geneticmaterials.
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B. IB
C. dual enrollment
D. AP
Answer:
2 Barr bodies
Explanation:
A Barr body is an inactive X chromosome. The inactive X chromosome is transcriptionally inactive. They derive their name from Murray Barr who discovered them
The Barr bodies are usually visible in humans with more than one X chromosome at interphase during cell division.
For a human male with the chromosome XXXYY, there will be 2 Barr bodies since he has 2 extra X chromosomes.
DNA analysis
light microscopy
electron microscopy
Electron microscopy has enabled the greatest advances in understanding law of inheritance. Thus, option D is correct.
Inheritance can be defined as the process by which an offspring can carry genetic information from their parent.
Gregor Mendel who first postulated laws of inheritance while doing hybridization experiment on garden pea plant.
He proposed three laws
First Law of Dominance states that In an organism, a character express in two forms or allele.
In F1-progeny the allele which is expressed is called dominant, while the other remain masked is called recessive allele.
Second Law of segregation which states the alleles do not show any mixing and both the traits are appeared in F2-generation.
Third Law of Independent Assortment states that when two pairs of characters are combined, separation of one pair of trait is independent of other pair segregation of one pair of character.
Thus, option D is correct.
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Answer:
DNA Analysis
Explanation: