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satela [25.4K]
3 years ago
14

What two things do scientists use to study the evolutionary trends in vertebrates​

Biology
1 answer:
laiz [17]3 years ago
4 0

Fossil Record and characteristics of today's chordates

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it could cause vaginal itching.

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Molecule 1 has the nitrogenous base sequence TCA AGT. Which set of bases in Molecule 2 can bond to that sequence in a complement
serious [3.7K]

Complete question:

Molecule 1 has the nitrogenous base sequence TCA AGT. Which set of bases in Molecule 2 can bond to that sequence in a complementary way?

a. UCAAGU

B. AGTACA

C. AGUUCA

D. UCAATA

Answer:

C. AGUUCA

Explanation:

DNA template strand and the corresponding RNA have complementary sequences. Adenine in the DNA template strand pairs with "uracil" base of RNA while cytosine pairs with its "guanine" base. Similarly, thymine base in DNA template strand pairs with "adenine" base in the RNA. This occurs since RNA does not have a thymine base. RNA has uracil base instead. Therefore, the molecule 1 with sequence  TCA AGT would bind to the molecule 2 with the " AGU UCA" sequence.  

Molecule 1: DNA template:  TCA AGT  

Molecule 2: mRNA:              AGUUCA

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3 years ago
Help!!A student lists some characteristics of asexual reproduction in plants.
sineoko [7]
2 and 3. Seeing as only 1 parent is producing the offspring, it’s bound to have be identical. Flowering plants can be produced asexual or sexually so it has to be 2 and 3.
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Hepatocyte growth factor aff ects satellite cell activation and diff erentiation in regenerating skeletal muscle
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Hepatocyte growth factor (HGF) is the only known growth factor that activates quiescent satellite cells in skeletal muscle.

Hepatocyte growth factor regulates cell growth, cell motility, and morphogenesis by activating a tyrosine kinase signaling cascade after binding to the proto-oncogenic c-Met receptor. Hepatocyte growth factor is secreted by mesenchymal cells and acts as a multi-functional cytokine on cells of mainly epithelial origin.

HGF, produced by some cancer cells, stimulates c-Met, through activation of the autocrine signaling system. Hepatocyte growth factor (HGF) is a paracrine hormone that plays an important role in epithelial-mesenchymal transition. HGF secreted by mesenchymal cells affects many properties of epithelial cells, such as proliferation, motility, and morphology.

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1 year ago
RNA differs from DNA in that RNA has?
Maksim231197 [3]

Answer:

C. a single strand and contains uracil.

Explanation:

DNA has 4 bases: adenine, cytosine, guanine, and thymine and is double stranded while RNA is one stranded and instead of thymine, it uses uracil.

Hope this helps :)

3 0
3 years ago
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