What is meant by basic chromosome number?

What is Monoploidy and Haploidy?

Haploid describes a cell that contains a single set of chromosomes that are not paired. … In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells. The term monoploid refers to a cell or an organism that has a single set of chromosomes.

How many base pairs are there in rice?

The rice genome has about 430 million base pairs.

Which of the following is 6x hexaploid wheat?

Table of wheat species

Wheat taxonomy – two schemes
Hexaploid (6x), Domesticated, Free-threshing
Common or bread wheat BAuD Triticum aestivum L.
Club wheat BAuD Triticum compactum Host
Indian dwarf or shot wheat BAuD Triticum sphaerococcum Percival

How many chromosomes are present in the endosperm of wheat?

Endosperm is triploid (3n) while the egg cell is haploid (n). So, the number of chromosomes in endosperm and egg cell will be 63 (3n=21×3=63) and 21 (n=21) respectively.

What is the ploidy of wheat?

Colchicine causes the chemical mutation which results in the inability of the chromosomes to segregate during the anaphase. Thus, the species then obtained is Triticum aestivum which is hexaploid or more precisely allohexaploid [left( {6n} right)]. Thus, the ploidy level of bread wheat is [6n].

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What happens if you have 45 chromosomes?

Turner syndrome (TS), also known as 45,X, or 45,X0, is a genetic condition in which a female is partly or completely missing an X chromosome.

What does having 47 chromosomes mean?

A trisomy is a chromosomal condition characterised by an additional chromosome. A person with a trisomy has 47 chromosomes instead of 46. Down syndrome, Edward syndrome and Patau syndrome are the most common forms of trisomy.