Number of chromosomes, Biology

Assignment Help:

NUMBER

Benden and Boveri first indicated that number of Chromosomes is definite in each organism.

(1) Haploid (n) - One set of Chromosomes. i.e. one Chromosome of each type.

(2) Diploid (2n) - Two sets of chromosomes i.e. two Chromosomes of each type.

Two chromosomes of each type form pairs during fertilisation and meiosis. Such pairs called homologous pairs.

One Chromosome of a pair is received from male parent and other from the female parent (such pairing first occurs at the time of fertilisation)

Mucor haemelis  2n = 2

Haplopappus gracilis 2n = 4. Haplopappus is a plant of family compositae.

Ophioglossum reticulatum 2n = 1262

Ascaris megalocephala 2n = 2

Aulocantha (Radiolarian protozoa) 2n = 1600


Related Discussions:- Number of chromosomes

Heart, which part of human body purify the blood

which part of human body purify the blood

What do you understand by carcinogens, Q. What are carcinogens? The Car...

Q. What are carcinogens? The Carcinogens are factors capable of producing neoplasias and any mutagen, a substance that can induce DNA mutation, is a potential carcinogen. Insta

How physical activity affect requirement of protein, How Physical Activity ...

How Physical Activity affect requirement of protein? Research on protein needs for muscular work had its beginning in 1863 when Von Leiberg postulated that muscle protein was d

Determine the osseointegration, What is osseointegration The smaller th...

What is osseointegration The smaller the devital zone that forms around the implant subsequent to the surgical trauma, the more likely rigid fixation will occur. The aim is to

Nerve cells, how to design a nerve cell for homework

how to design a nerve cell for homework

Explain foscarnet, Foscarnet  (Foscavir)  Foscarnet is an alternative t...

Foscarnet  (Foscavir)  Foscarnet is an alternative to ganciclovir and valganciclovir for treatment of CMV infection. It is approved for use in CMV retinitis, including progress

Define colorimetric method - 2, Define Colorimetric Method - 2, 4 Dinitroph...

Define Colorimetric Method - 2, 4 Dinitrophenylhydrazine Method? We shall use this method in estimating vitamin C in a given sample in the laboratory. Here, let us look at the

Astrobiology, Astrobiology : This is the branch of scientific enquiry deali...

Astrobiology : This is the branch of scientific enquiry dealing with the possibility of life in the outer space. Astrobiology is a type of study of the evolution, origin, distribut

Cellular and molecular events of bone formation, Q. Summarize the cellular ...

Q. Summarize the cellular and molecular events of bone formation? The events involved in osseous wound healing at implants recapitulate the events of wound healing. Haemostasi

Yersinia pestis, what the advantage of yersinia pestis

what the advantage of yersinia pestis

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