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ICE Princess25 [194]
4 years ago
15

The human genome contains approximately 10 6 copies of an Alu sequence, one of the best-studied classes of short interspersed el

ements (SINEs), per haploid genome. Individual Alu units share a 282-nucleotide consensus sequence followed by a 3'-adenine-rich tail region (Schmid, 1998). Given that there are approximately 3×109 base pairs per human haploid genome, about how many base pairs are spaced between each Alu sequence?
Biology
1 answer:
sesenic [268]4 years ago
6 0

Answer:

3000

Explanation:

- Human haploid genome >>> 3 x 10⁹ base pairs >>> 3,000,000,000 base pairs

- Human haploid genome >>> 10⁶ copies >>>  1,000,000 Alu Transposable Elements

- Space between each Alu Transposable Element (TE) >>>

3,000,000,000 base pairs / 1,000,000 Alu elements  = 3,000 base pairs

Alu elements are highly repetitive DNA sequences that account for approximately 20% of the human genome. These sequences (Alu) are considered to be non-autonomous Transposable Elements (TEs) capable of transposing within the genome via an RNA intermediary.

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irga5000 [103]

A) Some members of the Euglenoids lose their photosynthetic pigment when left in Dark : TRUE

B )The loss of photosynthetic pigment in Euglenids stored in the dark is permanent : False

<h3>What are Euglenas</h3>

Euglenas are unicellular organisms belonging to the kingdom Protista, when kept in the dark for too long Euglenoids begin to lose their chlorophyll. As it loses its chlorophyll it becomes unable to produce its own food and starts consuming bacterias within its habitat.

The loss of chlorophyll in Euglenids can be regained after it is been exposed to sunlight and allowed  to grow exponentially for several weeks.

Hence we can conclude that  Some members of the Euglenoids lose their photosynthetic pigment when left in Dark : TRUE  while The loss of photosynthetic pigment in Euglenids stored in the dark is permanent : False

Learn more about Euglenoids : brainly.com/question/1278307

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Explanation:

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Vinvika [58]

Answer:

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3 years ago
Why is it important that a drop of condensate be suspended from the thermometer during a distillation?
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Distillation is the process of separation in which the volatile parts of a liquid mixture are separated by selective boiling and condensation. This process may lead to partial separation or complete separation. Distillation is employed for a considerable number of commercial processes such as the production of alcohol, kerosene gasoline, etc. During a distillation, it is important that a drop of condensate be suspended from the thermometer because it allows steady distillation and a stable temperature.

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3 years ago
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