Answer: 26 chromosomes.
The diploid number is the number of chromosomes required for two
sets of copies of the organism’s genome ( this is the number of chromosomes in the cells except gametic cells). The organism's genome is represented as n, and the diploid number,as 2n (2 x 13= 26).
Answer:
Unlike animal cells, bacteria have a porous cell wall surrounding their plasma membrane. The cell wall may help bacteria survive in <u>hostile</u> environment.
Explanation:
Diferent from cells of higher organisms, the bacterium is faced with an unpredictable and often hostile environment.
Bacteria have evolved in order to survive, a sophisticated and complex cell envelope that protects them, but at the same time allows selective passage of nutrients from the outside and waste products from the inside.
Explanation:
<h3>
<u>Packa</u>g<u>in</u>g<u> Of Dna Double </u><u>Helix</u>:</h3>
Prokaryotes
↬ No well defined nucleus.
↬ DNA is held with some proteins in nucleoid region.
Eukaryotes
↬ <u>Histones</u>:
- ↬ Positively charged proteins.
- ↬ Rich in arginine and lysine.
- ↬ 5 types:- H₁ H₂A, H₂B, H₃ H₄.
↬ <u>Histone octamer</u>:
↬ <u>Nucleosome</u>:
- ↬ DNA (-ve charge) makes two complete turns around the histone octamer (+ve charge) to form a nucleosome.
Answer: Node
Explanation:
Cladograms are a graphical representation of the evolutionary relationship between organisms. These are usually shown as branches from a central point, which represents a common ancestor. In rooted cladograms, the branches are shown relative to the time elapsed since evolving from a common ancestor joined at the node, or point of divergence.
Evolution typically occurs after accumulating mutation, and natural selection of beneficial traits that confer greater chances for survival.
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