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In the eukaryotes replication of chromosomal DNA happens only in the S phase of the cell cycle. As for bacterial DNA, eukaryotic DNA is replicated
figure: The eukaryotic cell cycle. The S point is typically 6-8 h long, G2 is a point in which the cell prepares for mitosis and lasts for 2-6 h, mitosis itself (M) is short and takes only about 1 h. The length of G1 is very variable and depends on the cell type. Cells can enter G0, aquiescent phase, instead of continuing with the cell cycle.
How are radioactive probes useful in DNA fingerprinting? Radioactive probes bind to specific fragments in a DNA sample like a donor gene. A probe can identify which bacteria ha
CONDITIONE D REFLEX - Response which is achieved by training is conditioned reflex. I. P. Pavlov in 1920 displayed it by experimenting on dog. These are voluntary in
In what ways is water lost from the body? Water is lost from the body by a) Evaporation (lungs and skin), b) Urination and defaecation (faeces always have water).
Are nematodes diploblastic or triploblastic animals? Just like platyhelminthes, nematodes are triploblastics, i.e., they show three germ layers (ectoderm, mesoderm and endoder
Do the arteries that carry blood from the heart to the lungs have arterial or venous blood? What happens to the blood when it passes through the lungs? Arteries of the pulmonar
Species Diversity Species diversity means the differences between species (both domesticate d and wild). It is the most visible component of biodiversity as implied by the word
explain satellite chromosomes
HORMONE S OF PANCREAS AND THEIR ROLE - (i) Glucagon (Secreted by a-cells) It stimulates the liver to convert stored glycogen into glucose. Glucagon is controlled b
Biology : Biology may be defined the study of living organisms. It mainly deals with the characteristics of living organisms and their classification. It is also concerned with the
Describe Surgical Treatment prosthetic valve endocarditis ? If there is definite indication for early surgery, the current understanding is to proceed with valve replacement ir
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