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Dictionary » D » Diploid

Diploid

Definition

noun

(Science: genetics, cell biology)

A cell or an organism consisting of two sets of chromosomes: usually, one set from the mother and another set from the father. In a diploid state the haploid number is doubled, thus, this condition is also known as 2n.


adjective

Of or pertaining to a diploid, that is a cell or an organism with two sets of chromosomes.


Supplement

An example of a cell in a diploid state is a somatic cell. In humans, the somatic cells typically contain 46 chromosomes in contrast to human haploid gametes (egg and sperm cells) that have only 23 chromosomes.


Word origin: from Greek diplous, double + -OID
Related forms: diploidic (adjective), diploidy (noun)
Compare: polyploid, haploid
See also: chromosomes, ploidy


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Results from our forum


Meiosis produce haploid cells, twice. How?

... No, no, no! 1. Interphase - double genome - makes cell quadroploid (4 copies of everything) 2. recombination 3. meiosis 1: cell division - 2 diploid daughter cells 4. meiosis 2: cell division of 2 cells - 4 haploid daughter cells

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by Cat
Fri Oct 07, 2011 5:09 pm
 
Forum: Cell Biology
Topic: Meiosis produce haploid cells, twice. How?
Replies: 1
Views: 55

Meiosis produce haploid cells, twice. How?

... Meiosis II also produces two haploid cells, but does not undergo interphase, and it is an immediate continuation of meiosis I. So, How can the diploid cell be halved it's chromosomal number, twice and still be haploid? Shouldn't it be quarter-ploid or something? Thanks, for your input :)

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by easternuser
Wed Oct 05, 2011 6:58 pm
 
Forum: Cell Biology
Topic: Meiosis produce haploid cells, twice. How?
Replies: 1
Views: 55

How many chromosomes in nucleus of non-dividing root tip...?

sporophyte is diploid or monoploid?

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by JackBean
Thu Sep 22, 2011 6:46 am
 
Forum: Cell Biology
Topic: How many chromosomes in nucleus of non-dividing root tip...?
Replies: 2
Views: 204

What's the difference between a seed and a spore?

Hi! I really need some help with this question. :D I'm pretty sure it's not a. a) spores are monoploid and seeds are diploid b) only the seed is a reproductive structure c) spores are formed by mitosis and seeds are formed by meiosis d) sprorophytes form spores and gametophytes from ...

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by petlover48
Wed Sep 21, 2011 4:44 pm
 
Forum: Botany Discussion
Topic: What's the difference between a seed and a spore?
Replies: 3
Views: 173

telomeres in thier phases

If 2 haploid cells with 16 chromosomes mate to form a diploid cell, how many telomeres are in a G1 phase cell? G2 phase cell, prophase 1 cell, telophase 1 cell, and a telophase 2 cell?

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by tpal
Mon Aug 29, 2011 12:27 am
 
Forum: Genetics
Topic: telomeres in thier phases
Replies: 2
Views: 289
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