Identifying the genetic sex of a child is based on finding intracellular Barr bodies that consist of inactive chromatin material.
Inactive chromatin material is the one where no transcription takes place. It is also known by the name heterochromatin. It appears as a dark condensed form in the chromatin.
Barr bodies are the inactive X chromosomes. These are mad inactive by a process termed as lyonization. It is essential to make the chromosome inactive in organisms with XY type of sex determination. They are present at the periphery of the nucleus. Inactivation of X chromosome makes the amount of X chromosomes equal in both, males and females.
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(A) The structure is the cell wall. The cell wall protects the cell from damage. It is also there to make the cell strong, to keep its shape.
(B) Structure Z is a chloroplast. Chloroplasts work to convert light energy of the Sun and turn it in to sugars that can be used by the cells. This process is also called photosynthesis.
(C) Since chloroplasts create sugar for a plant cell, fungi has mitochondria. Fungi uses mitochondria which create ATP (also know as Adenosine Triphosphate) which is energy. Therefore, fungi doesn’t need chloroplasts.
<span>A nurse who works in the pediatric unit of a hospital knows that there is danger due to errors in drugs, and that danger is higher for infants and children than adults because children and infants have immature kidney function and liver function.</span>
That it can send signals to diffrent people
Answer:
C. Photoautotrophs-oxygenic.
Explanation:
LUCA is an abbreviation of the ‘Last Universal Common Ancestor’. The LUCA was a microorganism which lived around 4 billion years ago. The evidence had shown that the LUCA was lived deep underground in hydrothermal vents. These vents were rich in iron-sulphur. It did not use air but made its food from the metal-rich environment surrounding it. It made organic compounds such as ammonia for its metabolism from elements such as hydrogen, carbon dioxide and nitrogen.
