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

What is the virus that causes flu, Q. What is the virus that causes flu? Wh...

Q. What is the virus that causes flu? Why doesn't the body produce permanent immunity against that virus? How does the vaccine against flu work? Flu is a disease caused through

What will occur to the levels above of secondary consumers, In the short te...

In the short term what will occur to the levels above and below a population of secondary consumers of a numeric pyramid if a large number of individuals from this population dies?

Show characteristics of protozoans, Q. What are the characteristics of prot...

Q. What are the characteristics of protozoans that make them resemble animals? Protozoans are unicellular beings with some related characteristics to animal cells. In compar

Metabolic process location, Metabolic Process Location Within the study...

Metabolic Process Location Within the study of biochemistry, what tends to obtain lost amidst the numerous pathways and enzymes is the fact which metabolism concerns the overal

Does the environment exert an influence on the phenotype, Does the environm...

Does the environment exert an influence on the phenotype? The phenotype may be altered (compared to the original situation conditioned by its genotype) by nongenetic means, ins

Difference between diastolesystole and systole, Q. What is the difference b...

Q. What is the difference between diastoleSystole and systole and diastole are the two stages into which the cardiac cycle is divided Diastole is the stage of the cardiac cycle

Clinical features of tricuspid regurgitation, Q. Clinical Features of tricu...

Q. Clinical Features of tricuspid regurgitation? Patients with severe primary tricuspid regurgitation will have symptoms of fatigue, dyspnoea and effort intolerance, abdominal

Explain dna replication, Q. As a result of the DNA replication two DNA mole...

Q. As a result of the DNA replication two DNA molecules come into existence. Why is it not correct to assert that the two "new" DNA molecules are created? What is the name given to

Complications of diabetes, Q. Complications of Diabetes? Diabetes, as y...

Q. Complications of Diabetes? Diabetes, as you know, is a lifelong disease. We have said earlier also that it can be controlled but not cured. Control of diabetes by ensuring n

What are pioneer species, What are pioneer species? What is the role of the...

What are pioneer species? What is the role of the pioneer species? Pioneer species are those first species that colonize places where before there were no living beings, like,

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