Diploidy and haploidy, Biology

Assignment Help:

Diploidy and Haploidy :: In the chromosomal complement  given species  not all the  chromosomes are different  from each other .In fact these  are in pairs ,i.e.  every  two chromosomes of the  karyotype  are similar  in shapes  size and  structure or say  are homologous, Obviously  the chromosomes   of one pairs  are different from  those of every  other pair. This  means  that the karyotype in fact  comprises two  similar sets of chromosomes, Hence it  is called diploid )2x or 2n,)

In sexual reproduction ,union of two  different  sex cells  or gametes  (male gamete or sperm cell and  female gamete or ovum) occur  to form a single diploid  cell called  zygote. From  the zygote, all body  cells  of a new  individual  arise by  repeated   mitotic divisions. Thus the karyotypic diploid chromosomal  complement  is transmitted  to all  body  cells. However  to prevent   multiplication  of the diploid  complement the sex  cells must contain  only half  the number  or say a single  set or chromosomes .This gametic chromosomal complement is thus, haploid (x or n) and  called genome, in contrast  to the  karyotype  of diploid  somatic cells, Obviously  of the  two sets  of chromosomal in a karyotype in every  individual, one is originally  obtained from male and the  other female parents.

 


Related Discussions:- Diploidy and haploidy

Development of fruit, Development of Fruit Concurrent with the develo...

Development of Fruit Concurrent with the development of the seed(s), the ovary is transformed into a fruit. The fruit protects the seeds and allows their release or germinati

What are the classification of diabetes, Q. What are the Classification of ...

Q. What are the Classification of Diabetes? Several forms of diabetes have been identified as a result of research and survey conducted world-wide. These forms of diabetes incl

Coagulation - blood collection , Coagulation - Blood Collection : Plasm...

Coagulation - Blood Collection : Plasma is used to minimize the time needed for coagulation so it is used is medical emergencies. There are many types of anticoagulants used

Heterotrophic nutrition, heterotrophic nutrition in any 5 type...

heterotrophic nutrition in any 5 types of organism

What is the role of platelet plug formation in hemostasis, What is the role...

What is the role of platelet plug formation in hemostasis? What events occur during platelet plug formation? Describe the circumstances that may induce inappropriate platelet plug

Respiratory insufficiency and respiratory failure, Respiratory Insufficienc...

Respiratory Insufficiency Respiratory insufficiency usually indicate inadequate exchange of oxygen and carbondioxide to meet the needs of the body during normal activities.

Physical signs of mitral regurgitation, Q. Physical Signs of mitral regurgi...

Q. Physical Signs of mitral regurgitation? Pulse is of normal character but carotid upstroke may be brisk. Atrial fibrillation is often present in a patient with advanced disea

Explain animal sources of natural colourants, Explain Animal sources of Nov...

Explain Animal sources of Novel Sources of Natural Colourants   The most common animal pigments of use as food colourants are those based on the haem structure. In nature, ha

Hemicryptophytes - classes of life form, Hemicryptophytes - Classes of Life...

Hemicryptophytes - Classes of Life Form In this case the perennating buds or organs are situated at the soil surface where they are protected by soil and fallen leaves. These

Explain the cost utility analysis, Explain the Cost Utility Analysis? C...

Explain the Cost Utility Analysis? Cost utility analysis: Cost utility analysis provides for measurement of health outcomes for a given cost. The health outcomes are measured q

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd