Introduction to Types of Chromosomes
The chromosomes are categorized into several types based on shape and position of the centromere. As per to the position of centromere, the eukaryotic chromosomes might be
1. rod shaped (telocentric and acrocentric),
2. L-shaped (sub-metacentric) and
3. V-shaped (metacentric).
There are two category of chromosomes relies on their function. They are as follow:
1. autosomes and
2. sex chromosomes.
Diagram: Four morphogenic types of chromosomes
Autosomes
They are exists in all the organisms' cells. They manage the somatic features of an organism. In the human being diploid cell, 44 chromosomes are autosomes while the rest two are sex chromosomes.
Sex chromosomes
In the diploid cells of animals and specific plants, one or more than one special chromosomes are dissimilar from the autosomes in their morphological structures and behaviour. These chromosomes are included in the sex determination. They are termed as sex chromosomes. In human, female XX chromosomes and male has XY.
Unusual chromosomes
Unusual chromosomes are abnormal chromosomes. They are different from the fundamental structure of normal chromosomes. Example: B-chromosomes and Double minutes. B-chromosomes are as well termed as supernumerary and accessory chromosomes. They are extra chromosomes found in a number of individuals in a population. Example: Maize. They are general in plants and they decrease viability.
Double minutes are unstable chromosome type structures. They comprise no centromere and formal telomeres. They take place in cancer cells that depict resistance against drugs.
Special types of chromosomes
In Eukaryotic organism's specific chromosomes are found only in specific special tissues and are not observed in other tissues. These special types of chromosomes are larger in size and are termed as giant chromosomes. In particular plants, they are found in the suspensors of the embryo. There are two kinds of giant chromosomes -
1. Polytene chromosome
Polytene chromosomes were examined by C.G. Balbiani in the year 1881 in the salivary glands of Drosophila. The characteristic aspect of polytene chromosome is that along the length of the chromosome here is a variety of dark bands alternate with clear zones termed as inter bands. The polytene chromosome comprises very large puff known as Balbiani ring. It is as well termed as chromosomal puff. Like this chromosome occurs in the salivary gland it is termed as salivary gland chromosomes.
Diagram: Polytene chromosome
2. Lamp brush chromosome.
Lamp brush chromosomes were very firstly examined by Flemming in the year 1882. It is looked like a shape of brushes. They take place at the diplotene stage of meiotic prophase in oocytes of an animal Salamandor and in unicellular alga Acetabularia's giant nucleus. The extremely condensed chromosome creates the chromosomal axis, from that lateral loops of DNA extend the result of intense RNA synthesis.
Diagram: Lamp brush chromosome
Latest technology based Biology Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Types of Chromosomes homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Types of Chromosomes, project ideas and tutorials. We provide email based Types of Chromosomes homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Types of Chromosomes. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Biology homework help and assignment help services. They use their experience, as they have solved thousands of the Biology assignments, which may help you to solve your complex issues of Types of Chromosomes. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
www.tutorsglobe.com offers production possibility curve (ppc) homework help, assignment help, and economics solutions by online economics tutors.
organic chemistry and classification of organic molecules tutorial all along with the key concepts of scope of organic chemistry, uniqueness of carbon atom, representation of organic molecules, classification of organic compounds, heterocyclic compounds
Free SAT Study Guide, SAT Test Papers, SAT Practice papers, SAT Test pattern and general information, Find SAT exam information and resource, material free at Tutorsglobe.com
The cause that we are regarded as to whether one company is a subsidiary of another is, of course, that group financial statements must be ready in which there is a parent/subsidiary relationship, but not otherwise.
Animal Kingdom Diversity tutorial all along with the key concepts of Phylum Porifera, Phylum Cnidaria, Phylum Platyhelminthes, Phylum Rotifera, Phylum Nematoda, Phylum Annelida, Phylum Mollusca, Phylum Arthropoda, Phylum Echinodermata, Phylum Chordata
The electromagnetic spectrum tutorial all along with the key concepts of Range of the spectrum, Interaction of electromagnetic Radiation with Matter, Types of radiation, Nature of Light and Quantum Theory
tutorsglobe.com earnings per share assignment help-homework help by online governing a company tutors
Radio analytical separation techniques tutorial all along with the key concepts of Precipitation, Distillation, Solvent Extraction, Ion Exchange and Electrochemical deposition
Theory and lecture notes of Stock Market and Interest Rates all along with the key concepts of stock market and interest rates, Stock Market, Interest Rates. Tutorsglobe offers homework help, assignment help and tutor’s assistance on Stock Market and Interest Rates.
tutorsglobe.com theories of interest assignment help-homework help by online interest tutors
Theory and lecture notes of Properties of Logarithms all along with the key concepts of Change of Base Formula, Logarithms are Exponents, Melodic Mathematics, Common Mistakes in logarithm. Tutorsglobe offers homework help, assignment help and tutor’s assistance on Properties of Logarithms.
Vector Spaces tutorial all along with the key concepts of Linear Independence, Basis Vector, Inner or Scalar Product and Norm of a Vector
cell phones are also termed as wireless phones or mobile phones are hand-held phones with built- in antennas. these are also called transceivers.
tutorsglobe.com hearing aid assignment help-homework help by online ear tutors
The most correct technique of testing the armature for accurate resistance, number of turns, short and open reversed coil connection is through the drop test.
1962557
Questions Asked
3689
Tutors
1445039
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!