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Lubov Fominskaja [6]
3 years ago
15

Feathers,wings and hollow bones of birds are examples of

Biology
1 answer:
Gnesinka [82]3 years ago
7 0
What are the answer choices, it could be features or evolutionary traits are something, but what are the answer choices
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What is the source ol the carbon dioxide that is used in photosynthesis?
Gala2k [10]
The answer is the plant
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2 years ago
Oxaloacetate is a key intermediate in the citric acid cycle, but it is also needed as a precursor for the synthesis of glucose d
Murrr4er [49]

Answer:

Carboxylating pyruvate into oxaloacetate.

Explanation:

Replenishing oxaloacetate is done by carboxylating pyruvate into oxaloacetate through a process that is catalyzed by an enzyme called pyruvate carboxylase. This enzyme speed up the process and the replenishing of oxaloacetate occur quickly and the oxaloacetate is ready to function and participate in different chemical reactions.

7 0
3 years ago
In 1918, the Russian Tsar Nicholas II was deposed, and he and his family were reportedly executed and buried in a shallow grave.
GaryK [48]

Answer:

By making a paternity test by Short tandem repeats, or STRs (microsatellites).

Explanation:

Short tandem repeats, or STRs, are microsatellites consisting of repeated sequences of 2 to 6 base pair length monomers  in tandem, and most of them have a high degree of polymorphism. Half of an individual microsatellites are inherited by each parent, and they can be assesed by PCR amplification and further electrophoresis.

In this case, you would try to recover a bone from the remainings of the woman, the Tsar and his wife, since the rest of the latest were in a shallow grave with many different individuals. Preferably, you should manipulate this samples in an ancient DNA facility (aDNA) with proper techniques. You clean the bone samples, drill them, and from internal bone powder make a DNA extraction. After this, you perform a series of PCR targeting a panel of STRs, and electrophoresis. If the woman claim is true, half of her microsatellites should have correspondence with the Tsar, and half with the ones of his wife.

4 0
4 years ago
How can a mutation result in a new trait ?
Serga [27]
Because the mutation pauses the whole system causing it to restart and create a new trait
7 0
3 years ago
Vegan vegetarians must rely on complimenting proteins in order to get all the essential amino acids. choose the best combination
liubo4ka [24]
If you want a complete protein in one food, tofu is probably your best bet. However, since you're probably not going to want to eat that every day, the best thing to do is eat a variety of high protein foods. Mix your proteins in order to get complete proteins. So, have say a grain (quinoa, millet, or brain rice are good) and have it with beans, or tempeh, or seitan, or nuts, etc. If you search for specific foods on that site, it'll show you which of the amino acids that food contains, and let you search for foods with complementary proteins. So if you want to be extra sure you're getting enough complete proteins, check what you're eating to see the amino acids in all of the different foods.
5 0
4 years ago
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