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fiasKO [112]
2 years ago
15

A fossilized fish is found that has jaws but no true bones. Where does this fossil belong on the cladogram?​

Biology
1 answer:
Vesna [10]2 years ago
5 0

Answer:

there is no cladogram shown but it would be between jaws and skeletons likely chondrichthyes as those are cartilaginous fishes

Explanation:

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A newborn baby dies soon after birth because her diaphragm and rib cage muscles failed to contract and she was unable to breathe
kozerog [31]

Answer:

Troponin

Explanation:

This is a complex of three proteins  (Trop C, I, T) that are responsible for muscle contraction of  the skeletal and cardiac  muscles . its binds with protein tropomysin  to lie in the grove between the actin filaments.  its prevents contraction by blocking  myosin crossbridge  in a relax muscles.Inorder to aid contractions  calcium ions binds with troponin, which leads to confrontational change.This exposes myosin on actin filaments,  leading to formation of crossbridge and therefore contraction of muscles.

Therefore if there is  a mutation in the gene that encoded Troponin, as explained above, calcium ion  will not be able to bind with tropinin, and there will be no exposure of myosin on actin filaments, no binding of  myosin on actin to cause crossbridge, and consequently no  muscle contraction,

Thus the intercoastal  muscle and diaphragm will not contract leading to death of the baby.

8 0
3 years ago
Read 2 more answers
Define what terms origin, insertion and tendon
artcher [175]

Answer:

<u>Origin:</u> In biology, origin can be described as the location where the muscle joins a stationary bone and as a result, no movement occurs.

<u>Insertion: </u>In anatomy, insertion can be described as the point of attachment which allows movement of a bone to occur. It moves when the muscles contract.

<u>Tendon:</u> In biology, the tendon can be described as a type of connective tissue which attaches a bone to a muscle.

6 0
3 years ago
After being warmed by incoming solar radiation throughout the day, the Earth emits _____ radiation, which is trapped near the Ea
enot [183]
There must be a balance between the flow of energy into the atmosphere and the flow of energy out of the atmosphere and back to space.<span>After being warmed by incoming solar radiation throughout the day, the Earth emits infrared radiation, which is trapped near the Earth’s surface by carbon dioxide.This radiation is called thermal radiation.</span>
8 0
3 years ago
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olya-2409 [2.1K]
Light is trapped by chlorophyll.
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3 years ago
In a 2 allele system, if the allele frequency for "t " is 0.84 , what is the allele frequency for " T " ?
algol13

Answer:

0.16

Explanation:

0.16 = 1-0.84

they are complementary

3 0
3 years ago
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