--%>
Assignment Help - homework help

Describe the term twins

Describe the term twins?  Genetically Explain the two types of twins which can be generated?

E

Expert

Verified

Twins are simultaneously produced (within the mother’s uterus) offspring. Twins categorized according to zygosity as monozygotic or as dizygotic twins.  Monozygotic twins, also called similar twins, are those originated from single fertilized ovum (thus from one single zygote); monozygotic twins are genetically identical; it means they have identical genotypes and are essentially of the same sex. Dizygotic twins, also called fraternal twins, are those who generated from two different ova fecundated by two different sperm cells; so they aren’t genetically identical and they aren’t necessarily of same sex.

   Related Questions in Biology

  • Q : How arthropod reproduction typified How

    How arthropod reproduction typified?

    		•
  • Q : What is Competitive Contract Award

    Competitive Contract Award: A competitive contract is any contract which opens a bidding competition, or process, in which the winning entity is awarded the contract. Such kinds of contracts are generally awarded by public agencies to make sure a fair

    		•
  • Q : Explanation of cross-reaction Give a

    Give a brief explanation of cross-reaction.

    		•
  • Q : Recognized Trends-Knowledge Management

    Two general trends have emerged to represent Knowledge Management in the literature and actual practice: I. Tangible knowledge assets captured and retained in organization structures and systems. For example, R & D (research and development) outcomes, patents, copyrights, royalties, l

    		•
  • Q : How do taenias get food and create gas

    How do taenias get food and create gas exchange?

    		•
  • Q : Haversian canals and Volkmanns canals

    Give a brief description of Haversian canals and Volkmann’s canals of bones? Is osseous tissue vascularized?

    		•
  • Q : How theory of

    How are the theory of chromosome, chromatids and chromatin connected? In which stage of the cell cycle does DNA duplicate?

    		•
  • Q : State Cost Avoidance Cost Avoidance :

    Cost Avoidance: Action taken to decrease future costs, like replacing parts before they fail and cause harm to other parts. The cost avoidance might incur higher (or additional) costs in shortrun however the final or life-cycle cost would be lower.

    		•
  • Q : Physical Features Biological

    The third factor of determining personality foundation is physical characteristics and rate of maturation. A person's physical features have some influence on his personality. Because he will affect influence on others and, in turn, will affect his self-concept. The rate of maturation also affect

    		•
  • Q : Periods of the first meiotic division

    Name the periods of the first meiotic division? Answer: Meiosis I is classified into prophase I, metaphase I, anaphase I and telophase I.

    		•