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Leni [432]
3 years ago
13

When a molecule of doubled stranded DNA undergoes replication, results in

Biology
1 answer:
likoan [24]3 years ago
8 0
The process of DNA replication begins with one double-stranded molecule of DNA. The two strands of this molecule separate during replication, and DNA polymerases add complementary nucleotides to each strand. The end results of DNA replication are two identical DNA molecules
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Use your knowledge of inheritance (the passing of traits from parents to offspring) to explain why
yarga [219]

Answer:

Fraternal twins can be different genders because they are two completely different eggs getting fertilized; but even two same gender fraternal twins do not look completely alike. Whereas for identical twins since one egg is splitting into two, the two cells have the same exact DNA make up and chromosomes.

I also believe the technical part of it is to do with genetics, like ressesive and dominant genes, because they can be the same gender, ex. both girls and one has blue eyes, fair skin, and blonde hair, the other twin has brown eyes, black hair and tan skin. The parents could be part of the genes but there is also grandparents maybe the mom's mom has blonde hair and blue eyes, with fair skin. But the dad he has brown eyes, black hair and tan skin. The moms genes were recessive, but the grandma's genes were dominant.

I tried to explain it as best as I could I hope it helps!

4 0
2 years ago
Which of the following statements describes a benefit of most cells being
azamat
C I used it and it worked
4 0
3 years ago
Read 2 more answers
A 58 year old lawyer presents in the emergency room with headache, irritability, generalized muscle pain and uncontrollable back
Lerok [7]

Answer:

A. What is your diagnosis here?

As per symptoms and incident of puncturing left arm with nail from an old barn indicates it can be infection of Clostridium tetani causing disease tetanus.

When such kinds of wound occurs, there should be injection of tetanus immunoglobulin (TIG) immediately. This injection contains antibodies against Clostridium tetani which can kill the microorganism. It should be injected as soon as possible. But this is short term immediate medication.

B. What is the proper treatment of this problem?

For the treatment antibiotic penicillin, metronidazole or tetracycline can be given, it prevents multiplication of bacteria and production of neurotoxin from bacteria. these neurotoxins are responsible for muscular spasms. Along with antibiotic some anticonvasculants, muscle relaxants can be given to reduce spasms, anxiety.

C. How could this have been prevented?

This infection can be prevented by giving its vaccine in childhood itself. Vaccine is given in the form of DTaP vaccine (diptheria, tetanus toxoid, acellular pertusis). It is given in 5 shots. It is given in the arm or thigh when child is at 2 month age, 4 month age, 6 month age, 15 to 18 month age, 4- 6 years of age.

Explanation:

4 0
3 years ago
Complete the following sentences to indicate which gene expression components are found in virus particles. Click on a term and
AleksandrR [38]

Answer:

  1. RNA polymerase is always present in the cell, but sometimes present in viruses.
  2. tRNA is always present in the cell but never present in viruses.
  3. Ribosomes are always present in a cell but never present in viruses.
  4. Genes are always present in the cell, but always present in viruses.

Explanation:

  • Viruses are acellular microorganisms that do not have a biochemical or gene expression of their own. They hijack the host's gene expression system.
  • RNA polymerase is the enzymes that forms RNA primers during DNA replication and the mRNA transcript of template DNA during transcription. Therefore, RNA polymerase is always required in cells.
  • Most viruses lack RNA polymerase except some RNA viruses such as polio viruses that contain an RNA dependent RNA polymerase, an enzyme that synthesizes mRNA from an RNA template.
  • Viruses lack tRNA and ribosomes as they are not capable of translation on their own.
  • Unlike the gene expression machinery, all organisms including viruses have a genome. Viruses can have both DNA and RNA genomes.

6 0
3 years ago
Which of the following are some of the chief characteristics that scientists use to help them classify organisms into the correc
san4es73 [151]

Answer:

cell organization

reproduction

motility

Explanation:

8 0
2 years ago
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