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Naya [18.7K]
3 years ago
10

The proteins that help defend the body against bacteria, toxins, and allergens are called

Biology
1 answer:
Arte-miy333 [17]3 years ago
6 0
The proteins that help defend the body against bacteria, toxins, and allergens are called antibodies. The antibody<span> (Ab) protein is also known as an immunoglobulin (Ig).
</span>These<span> large Y-shaped proteins are</span><span> produced by the immune system in order to prevent the body in response to the presence of a foreign substance. The foreign substance is called antigen.
</span>
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The wild-type color of horned beetles is black, although other colors are known. A black horned beetle from a pure-breeding stra
Kisachek [45]

One hypothesis that explains the result is : A) Two genes are involved with  12:3:1  epistasis, such that A_B_ and A_bb are black, aaB_ is brown,and aabb is green.

Explanation:

  • This is a case of Dominant Epistasis.
  • When two genes are involved and presence of dominant allele of one gene masks the effect of either allele of the second gene then the epistasis is termed as dominant epistasis.
  • In the given case black :brown: green ratio is approximately equal to  12:3:1.
  • Here presence of a dominant A allele that is responsible for the black colour masks the effect of either allele of B. Therefore A_B_ and A_bb produces black beetles
  • Again , absence of dominant A allows B to express itself and Brown beetles are produced thus aaB_ is brown.
  • When both the genes are present as recessive alleles, neither brown nor black colour is expressed and the beetles are green.Thus, aabb are green.

4 0
2 years ago
PLZZ HELP !!!.... Based on this information, which of the organisms can produce offspring that
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The answer is the last one: amoebas, yeasts, hydras, and ferns
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3 years ago
Which of the following statements best explains why evolution by natural selection is considered a theory and not a hypothesis?
rjkz [21]

Natural selection provides the outline of an explanatory theory." Biologists consider it to be a scientific fact that evolution has occurred in that modern organisms differ from past forms, and evolution is still occurring with discernible differences between organisms and their descendants.

7 0
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One characteristic of all living things is that they
tino4ka555 [31]

Answer:

Must be able to reproduce.

Explanation:

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3 0
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Which of the following is important in accumulating and removing sand that result in shifting barrier islands?
elena55 [62]

Answer:

D. Longshore currents

Explanation:

Longshore currents are characterized as the sediment transport that occurs in the surf zone, due to the oblique incidence of the waves, along the beach. A current develops between the beach and the surf zone parallel to the coast, normally between 0.3 and 1 m / s. It is this process that is responsible for accumulating and removing sand that results in displacement of barrier islands.

5 0
3 years ago
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