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andreev551 [17]
3 years ago
15

Why does the body of a multicellular organism grow larger through cell division rather than by simply growing larger cells? give

two reasons?
Biology
1 answer:
den301095 [7]3 years ago
5 0
1.LARGES CELLS WILL REQUIRE MORE SPACE 
2,LARGER CELLS WILL ALSO REQIURE MORE AND MORE NOURISMENT
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Duplication of a segment of a chromosome would result in _______. see section 16.4 (page 344) .
Svetlanka [38]
Duplications are repeated segments of genetic materials that result from unequal crossing over during meiosis or through a replication error prior to meiosis. They usually occur when homologous pairs do not line up correctly or in chromosomes with a lot of repeat sequences. Duplication of a segment of a chromosome would result in Genetic variability during evolution due to gene duplication. 
5 0
3 years ago
In hamsters, we can examine the genes for coat color and eye color which are linked:B = brown coat, b = white coat, G = green ey
Inessa [10]

Answer:

10.2 cM

Explanation:

Given,

pure breeding parent 1 : BBgg = brown coat and pink eyes

pure breeding parent 2 : bbGG = white coat and green eyes

BBGG X bbgg = F1 = BbGg ( All are brown with green eyes )

When F1 progeny is test crossed with white coat and pink eyes hamster:

BbGg X BbGg = F2 =

brown, pink eyes = 99 = parental

white, green eyes = 103 = parental

brown, green eyes = 12 = recombinant

white, pink eyes = 11 = recombinant

Recombination frequency =

(total number of recombinants / total progeny ) * 100

= [( 11 + 12 ) / ( 99 + 103 + 12 + 11 )] * 100 = (23/225)*100 = 0.102 * 100 = 10.2 %

1 % recombination frequency = 1 cM distance between genes

Hence, the distance between B and G gene is 10.2 cM

4 0
3 years ago
Why is photosynthesis is so important to life on earth?
azamat
Photosynthesis is important to living organisms because it is the number one source of oxygen in the atmosphere. ... Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. Hope this helps
7 0
3 years ago
Read 2 more answers
Which of the following is the definition for speciation?
marshall27 [118]
2. The evolutionary process through which new species emerge

6 0
3 years ago
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Which of the following INCORRECTLY describes a polymer? Which of the following INCORRECTLY describes a polymer?
Len [333]

Answer:

A. ATP is a polymer of phosphates.

Explanation:

ATP is not a polymer of phosphates. It is a rather a complex organic molecule that has its main function to provide energy.

Starch and glycogens are polysaccharides or polymers of glucose or simply put, they have glucose subunits.

Nucleotides are biological molecules consisting of 3 major sub units which are the nitrogenous base, the phosphate acid and the 5 carbon (ribose) sugar. They are the building blocks of DNA and RNA and hence monomers.

Amino acids are basically organic compounds that contain amine (-NH2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to every amino acid molecule. They are bond together by a peptide bond between the -NH2 and -COOH group to furthet form polypetides. Proteins in the same vein are called polypeptides which is a chain of amino acids.

7 0
3 years ago
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