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V125BC [204]
3 years ago
12

What is Bifidobacterium Longum?

Biology
1 answer:
VARVARA [1.3K]3 years ago
3 0
<span>Pathogenic bacteria found in gastrointestinal tracts. </span>It's a <span>probiotic bacterium.
I hope this helps;)
If you haev any questions, please don't hesitate to PM me! 
</span>
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1. Your unique genetic identity comes from three different events; crossing over, random alignment, and random fertilization. Ex
svetlana [45]

Answer:

Crossing over and random alignment are the events of meiosis-I that add new gene combinations to the gametes. Random fusion of male and female gametes is called random fertilization.

Explanation:

During the pachytene stage of meiosis-I, part of the chromatids of each of the homologous chromosomes of a bivalent is broken apart and exchanged. This exchange of the genetic material between the members of a bivalent is called crossing over. The recombinant chromatids formed by crossing over have new allele combinations that were otherwise not present in the parental chromatids.

During metaphase I, the homologous pairs are aligned at the cell's equator in a random manner. This means that either the paternal or maternal chromosome of a pair may face one or the other pole of the cell. The arrangement of chromosomes during metaphase-I determines whether the paternal or maternal chromosome of each pair would be distributed to one or the other pole of the cell. This random segregation creates new gene combinations in gametes.

All the gametes have equal chances of getting fused with a gamete from the opposite gender. This is called random fertilization and further adds variations.

5 0
3 years ago
Which would prevent a plant from growing?
Ber [7]

Answer:

D. Sunlight

Explanation:

Since photosynthesis provides the energy the plant needs for growth, lack of light will stunt the plant's growth.

8 0
3 years ago
What is the Molecular mechanism of DNA replication?
kolezko [41]

Answer:

DNA replication a process of copying of a cell's DNA.  DNA replication is semiconservative process which means that each strand in the double helix helps in the synthesis of new, complementary strand and conserve the parent template.

The Molecular mechanism of DNA replication is as following:

  1. The double starnded DN in binded with hydrogen bond, the enzyme helicase opens up the DNA at the replication fork.
  2. A single stranded binding protein prevent the rewinding of DNA and so binds to the DNA around the replication fork
  3. Topoisomerase prevent supercoiling at replication fork.
  4. The ezymes primase come in action and produces RNA primers which are complementary to the DNA strand.
  5. DNA polymerase III help to extends the primers and allow them to add  to the 3' end, to make new DNA.
  6. DNA Polymerase then remove RNA primers and replace with DNA.
  7. DNA ligase blocks the the gaps between DNA fragments.

So, this is the molecuar mechanism of DNA replication.

7 0
3 years ago
Which of the following is a scalar quantity?<br> ⇒velocity<br> ⇒speed<br> ⇒force
scoray [572]

Answer: A. Speed

Explanation: Hope it Helps!

4 0
3 years ago
Read 2 more answers
Use the sample data below to answer the following question(s). Biologists studying the re-vegetation of two species of succulent
Ipatiy [6.2K]

The probability that they both were planted alone is 0.3325.

<h3>What is genetic probability?</h3>

Probability serves to mathematically estimate the possibility of events that happen by chance, that is, as a matter of luck.

In this case:

  • Number of plants planted alone = 134
  • P(both plants were planted alone) = 134/232 x 133/231 = 0.3325

So the probability that  both were planted alone is 0.3325.

See more about genetic probability at brainly.com/question/851793

#SPJ1

7 0
2 years ago
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