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lukranit [14]
3 years ago
5

Animals with bilateral symmetry___

Biology
1 answer:
ikadub [295]3 years ago
5 0
Animals with bilateral symmetry have a distinct head end
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How does the number of valence electrons in sodium (Na) compare to the number of valence electrons in calcium (Ca)? A. Na has tw
Darina [25.2K]

Answer:

D. Na has one fewer valence electron than Ca.

Explanation:

Elements in different groups has been grouper based on the number of valence electrons they possess. Valence electrons refers to the electrons at the outermost part of the shell of an atomic element.

Sodium (Na) belongs to group 1 on the periodic table meaning that it has one number of valence electrons while Calcium (Ca) belongs to group 2 meaning that it has two number of valence electrons. Hence, Na has one fewer valence electron than Ca.

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3 years ago
As lions hunt for food, they must not only be strong and quick, but they must also have the correct fur coloring in order to not
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B) Brown

Explanation: dying grasses are usually brown.

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3 years ago
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A cross is done between two mutant T4 phage (a- b+ c+) and (a+ b-c)(no order implied by these genotypes). The genotypes of the p
CaHeK987 [17]

Since, the relative frequency is incorrectly mentioned in the question. The correct relative frequency table is attached below.

Answer:

20.

Explanation:

The genotype with the least recombinant frequency will represent the double cross overs.

The double cross overs progeny are a+ b+ c-(2%) and a- b-c+(2%).

The percentage of the recombinant frequency determined the distance between the genes. In the double crossovers, the b gene gas been exchanged and present in the middle.

The single recombinant crossovers as compared with the parents are a+ b+ c+ (8%) and  a-b-c-(8%).

Distance between the gene a and b = Single cross overs + double cross overs

Distance between the gene a and b = 8 + 8 +2 +2 = 20.

Therefore, the distance distance between the gene a and b is 20 centi morgan.

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3 years ago
Collectively, the hollow cavities in the maxillae, ethmoid, sphenoid, and frontal bones are called the ____________ sinuses..
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The answer to this question would be: paranasal sinus.

There are a few sinuses near the face area. The sinus can be classified based on the bone that makes then to sinus maxillae, ethmoid, sphenoid and frontalis. This structure frequently gets infected causing sinusitis. Sinusitis patient can complain pain or feel the sinus got filled with some liquid.
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4 years ago
Need help with this pls ❤️
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RG, Rg, rG, rg i hope this helps
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3 years ago
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