Four new haploid cells are formed once the sister chromatids within the two daughter cells separate, forming four new haploid gametes.
<span>Down syndrome
is a chromosomal condition that is associated with intellectual
disability, a characteristic facial appearance, and weak muscle tone
(hypotonia) in infancy. All affected individuals experience cognitive
delays, but the intellectual disability is usually mild to moderate.</span>
Prophase I
The chromosomes condense, and the nuclear envelope breaks down & crossing-over occurs.
Metaphase I
Pairs of homologous chromosomes move to the equator of the cell.
Anaphase I
Homologous chrmosomes move to the oppisite poles of the cell.
Telophase I and Cytokinesis
Chromosomes gather at the poles of the cells & the cytoplasm divides.
Prophase II
A new spidle forms around the chromosomes.
Metaphase II
Chromosomes line up at the equator.
Anaphase II
Centromeres divides & chromatids move to the opposite poles of the cells.
Telophase II and Cytokinesis
A nuclear envelope forms around each set of chromosomes & the cytoplasm divides.
Oncovirus is the virus that is studied
Explanation:
Oncovirus are the tumour causing viruses, which has been a dominant in causing leukaemia and also solid tumours in lower species. Oncovirus grows clumps of cells in the upper layer of the original cell. Transformation of cells as well as the tumour formation in experimental cells are induced by the oncoviruses. viruses remain unique form one another because of their nucleic acid, morphology, mode of replication, host range and type of antigens induced in the tumour or induced cell.
Answer:
Possess striations. (Option A)
Explanation:
Skeletal muscle fibers are known as the type of striated muscle tissues and the somatic nervous system helps to control them. With the help of the bundle of collagen fibers which is called tendons, skeletal muscle cells attached to the bones.
Skeletal muscles are cylindrical and long in structure. While seeing under the microscope they have striated, and this striation occurs by the presence of actin, and myosin contractile proteins. Some functions of Skeletal muscle fibers are:
1) They help in contraction, and cellular physiology.
2) They help in signal transduction pathways.
