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mars1129 [50]
3 years ago
12

Which of the following provides evidence that supports the theory of plate tectonics?

Biology
2 answers:
zhannawk [14.2K]3 years ago
7 0

The answer to your question is,

Seafloor spreading

-Mabel <3

shusha [124]3 years ago
4 0

Answer:c

Explanation:

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Which of these pairs of body structures BEST illustrates a homologous relationship?
Rashid [163]
<span>A) Leg of a horse and the leg of a dog.
The rest of the choices are examples of convergent evolution because they are similar in  structures that evolved in separate places in the animal kingdom.
>Bats are mammals and birds are not, yet they both evolved a similar appendage</span><span>
Choices to this question are:
A) the leg of a horse and the leg of a dog
B) the wing of a bat and the wing of a bird
C) the fin of a dolphin and the fin of a shark
D) the beak of a bird and the beak of a turtle</span>
4 0
3 years ago
Leigh's disease is a mitochondrially inherited disease with symptoms that include seizures, fatigue, impaired reflexes, breathin
Ahat [919]

About the question:

You will find the pedigree in the attached files

Answer:

  • individual 4 → Affected woman → Black circle
  • individual 5 → Affected woman or man → Black circle or square
  • individual 7 → Healthy woman → Empty circle
  • individual 10 → Affected boy → Black Square

Explanation:      

Mitochondrial inheritance is the transmission of a disease or a trait from the maternal line.

<em>Most of the DNI is in the nucleus, but there is also DNI in mitochondria. Sperm cells hardly transfer mitochondrial genes to the progeny</em>, so mitochondrial DNI is mostly inherited from the maternal side. If there exists any mutation in this mitochondrial DNI, the whole progeny of the mutated woman will be affected, as they will get the mother genotype carrying the mutation. On the contrary, if an affected man is carrying a mutation in mitochondrial DNI, non of their descendants will get the disease.

Before answering the question, let us remember the pedigree symbols.

  • Squares represent Males/Men
  • Circles represent Females/Women
  • Empty symbols represent healthy/non-affected individuals
  • Solid black symbols represent sick/affected individuals

In the exposed pedigree, we can see that the mother is affected by the disease (individual number 2), so all her children are also affected (individuals 4, 5, and 6) because the <em>disease is mitochondrially inherited</em>.

Individual 3 is a healthy man, so individual 4 must be an affected woman (Black circle). As she is the one affected, then all her children will also be affected. This couple <em>had one boy and two girls</em>. Individuals 8 and 9 are girls (circle), so individual 10 must be the affected boy (black square).  

On the other hand, individual 6 is an affected man (black square), son of individuals 1 and 2. This man couples with a woman, and they have all healthy children. So this woman (individual 7) must be healthy. Even though the man is affected, all their children are not because their mother (7) is not. Remember that sperm cells do not transmit the mitochondrial genes to the progeny.      

And finally, individual number 5 might be either a man or a woman. In any case, this person is also affected by Leigh's disease.  

5 0
3 years ago
What is cellulase made of?
klio [65]
<span><span>
<span>Cellulase is an enzyme made up of protein</span></span></span>
6 0
3 years ago
Read 2 more answers
3 examples of producers and 3 examples of consumers
VikaD [51]

Explanation:

whales, elephants, cows, they are consumers

tree,grass,algae are producers

4 0
3 years ago
Addison has two dogs that are sisters. One of the dogs has white fur and the other dog has black fur. What scientific question c
Kay [80]

Answer:

I think The answer is a.

Explanation:

Answers b and d have nothing to do with fur color, and c seems unscientific.

6 0
3 years ago
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