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aleksandr82 [10.1K]
3 years ago
9

Why are some birds incapable of flight?

Biology
2 answers:
Crank3 years ago
7 0

Answer:

Ostriches, emus, cassowaries, rheas, and kiwis can't fly. Unlike most birds, their flat breastbones lack the keel that anchors the strong pectoral muscles required for flight. Their puny wings can't possibly lift their heavy bodies off the ground.

Explanation:

icang [17]3 years ago
4 0

Answer:

cuz they're fat and their wings are small

Explanation:

their flat breastbones lack the keel that anchors the strong pectoral muscles required for flight

they lost the ability to fly through evolution because flying was no longer needed

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How does polygenic inheritance differ from mendelian inheritance
Luba_88 [7]

Answer:

Mainly, the number of genes that control traits.

Explanation:

Polygenic inheritance does not follow Mendel's law of dominance. According to Mendel the dominant trait will mask the recessive trait however, this is not always the case. Polygenic inheritance states that traits are controlled by two or more genes and is also dependent on the environment.

Let's take skin color for example. A fair-skinned person will have a child with a dark-skinned person.

Mendelian inheritance would assume that the offspring would either be fair or dark only.

Polygenic inheritance would assume that the offspring would be either fair, dark, or a tone in between, depending on the environment they are in as well.

Hope you understood it.

7 0
3 years ago
Evaluate each of the statements below. If a statement pertains to the characteristics of all
padilas [110]

Answer:

it is 1 3 and 7 cause all those explain mineral

Explanation:

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6 0
1 year ago
Describe the process of photosynthesis and cellular respiration<br><br> (not too long)
Varvara68 [4.7K]
Photosynthesis is the process by which green plants make their food by tue help of sunlight and chlorophyll using carbondioxide and water to form oxygen and glucose







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5 0
3 years ago
Explain why a silent mutation might not affect the protein for which it codes
jasenka [17]
Codons that code for the same amino acid are termed synonyms, Silent mutations are base substitutions that result in no change of the amino acid or amino acid functionality when the altered messenger RNA (mRNA) is translated.
7 0
3 years ago
PLEASE ANSWER CORRECTLY!!!!! LOTS OF POINTS
UkoKoshka [18]

<u>The four types of interactions in communities are:</u>

  • Mutualism
  • Parasitism
  • Commensalism
  • Competition

<u>Definition of each interaction:</u>

<em>Mutualism: </em>

The type of interaction in which both the species involved are benefited, it is called mutualism.

<em>Parasitism:</em>

The type of interaction in which one species is benefited, whereas the other is harmed, it is called parasitism.

<em>Commensalism:</em>

The type of interaction in which one species gets benefited without harming or providing benefits to others is called commensalism.

<em>Competition:</em>

The type of interaction in which both species lose is called competition. It is opposite of mutualism.

<u>Symbiotic relationship:</u>

It refers to the type of interaction in which lastly one species gets benefited. The type of interactions such as <em>mutualism, commensalism, and Parasitism </em>are considered as symbiotic relationship.

7 0
3 years ago
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