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ASHA 777 [7]
1 year ago
10

Write any three characteristics of bacteria

Biology
2 answers:
AlexFokin [52]1 year ago
7 0

Any three characteristics of bacteria area

  1. lack of membrane-bound organelles
  2. unicellular
  3. small (usually microscopic) size. 
Aleksandr [31]1 year ago
6 0

Answer:

Three characteristic of bacteria are

1: Unicellular

2: Small size

3: lack of membran bound organless

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An unknown blue liquid was boiled. A blue solid was left after the liquid boiled away. Is the unknown material a mixture or a pu
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It is a mixture. 
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3 years ago
Genes for body color (B black dominant to b yellow) and wing shape (C straight dominant to c curved) are located on the same chr
xxMikexx [17]

Answer:

Map distance = Genetic distance, GD = 3.9 MU ≅ 4 MU

Explanation:

The more separated two genes are, the more chances of recombination there will be.  The closer they are, the fewer chances of recombination there will be. Two genes that are very close will have a few recombination events and are strongly bounded.    

To analyze the recombination frequency, we have to know that:

  • 1% of recombination = 1 map unit = 1centi Morgan = 1,000,000 base pairs.
  • And that the maximum recombination frequency is always 50%.  

The map unit is the distance between the pair of genes for which every 100 meiotic products one of them results in a recombinant one.  

Knowing that the genes are linked, we can calculate genetic distances between them. First, we need to identify the genotypes of the parental gametes with the ones of the recombinants. We can recognize the parental gametes in the descendants because their phenotypes are the most frequent, while the recombinants are the less frequent. So:

Parentals:

  • black, curved 337
  • yellow, straight 364

Recombinants:

  • Black, straight 17
  • yellow, curved 12

To calculate the recombination frequency we will make use of the next formula: P = Recombinant number / Total of individuals.

P = Recombinant number / Total of individuals.  

P = 17 + 12 / 337 + 364 + 17 + 12

P = 29 / 730

P = 0.039

The genetic distance (GD) will result from multiplying that recombination frequency (P) by 100 and expressing it in map units (MU).

GD = P x 100

GD = 0.039 x 100

GD = 3.9 MU ≅ 4 MU

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3 years ago
Technology Anton Van Leeuwenhoek used at the time?
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