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AveGali [126]
3 years ago
13

How do you create a “killed vaccine”?

Biology
1 answer:
vesna_86 [32]3 years ago
8 0

Answer:

An inactivated/killed vaccine is a vaccine consisting of either whole viruses or bacteria, or fractions of either, that have been grown in culture and then killed using physical (heat, or radiation) and chemical methods (usually formalin).

Explanation:

Virus: Measles vaccine, mumps vaccine, rubella ...

Bacteria: BCG vaccine, typhoid vaccine

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A finch population eats seeds that vary in size. There is variation in preference of seed type, and that variation positively co
ladessa [460]

Answer:

If larger seed became available, directional selection will act in favor of bigger beak finch.

Explanation:

In the case that more large seeds were to become available, then directional selection will start to influence in the beak size, favoring those individuals with bigger beaks. Those individuals with shorter beaks will start to disappear as these animals won't be able to eat the larger seed.

Directional selection <em>increases the proportion of individuals with an extreme phenotypic trait,</em> in this case, large beaks.

This selection presents more frequently in those cases in which <em>interactions between living organisms and the environment</em> modify in the same direction.

6 0
3 years ago
Identical twins who have separate placentas are somewhat less similar than identical twins who share a placenta. This best illus
Jobisdone [24]

Answer:

prenatal environments

Explanation:

Depending on the number of fertilized eggs and when the zygote division occurs, there are different types of twins. For example, If the zygote is formed by the union of an ovule and a sperm that after fertilization is divided to create two embryos, they are born identical twins, these babies carry the same genetic information.

4 0
3 years ago
A family that has no elements found in the earths crust
gayaneshka [121]
<h2>Answer:</h2>

Family of Synthetic Elements

<h2>Explanation:</h2>

In chemical Sciences a synthetic element is a chemical element that does not occur naturally on Earth, and it can only be created artificially in the laboratory. So far, 24 synthetic elements have been created in the laboratory and their atomic numbers lie from 95–118.

8 0
3 years ago
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Why might scientists care about fossils and dating fossils to begin with ?
Lynna [10]
Scientists use fossils to learn about organisms' lives and evolutionary relationships, to understand geological change, and even to locate fossil fuel reserves.
7 0
2 years ago
Before a scientific theory is accepted and supported, it has
I am Lyosha [343]

Answer:

Has to be tested and verified

Explanation:

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3 years ago
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