1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Firlakuza [10]
2 years ago
9

The common ancestors of birds and mammals were very early (stem) reptiles, which almost certainly possessed 3-chambered hearts.

Birds and mammals, however, are alike in having 4-chambered hearts. The 4 chambered hearts of birds and mammals are best described as
Biology
1 answer:
MatroZZZ [7]2 years ago
3 0

The common ancestors of birds and mammals were very early (stem) reptiles, which almost certainly possessed 3-chambered hearts. Birds and mammals, however, are alike in having 4-chambered hearts. The 4 chambered hearts of birds and mammals are best described as homoplasies.

<h3>What about homoplasies?</h3>
  • It is more frequently a modified version of an inherited characteristic.
  • For instance, the scales that were already present in its reptilian parent led to the evolution of feathers in birds.
  • Similar to reptiles, mammals developed fur from their predecessors' scales.
  • The same set of data can typically yield more than one potential cladogram.
  • Different species of legged lizards developed into snakes and lizards with limbless bodies.
  • Natural selection does not affect a sizable number of mutations.
  • They came to the conclusion that reptiles, birds, and mammals all descended from the same ancient reptilian progenitor.

Learn more about mammals here:

brainly.com/question/5400162

#SPJ4

You might be interested in
What are two proteins within cell growth that are internal factors?
TiliK225 [7]

DNA has sequences that mRNA finds the pair for (ex. DNA says AGC, RNA says UCG) 
with that, they only come in 3 nucleotide increments.
5 0
3 years ago
Today I.d.k what to ask. I asked what is wrong with me because I am lactose intolerance, and basically I hate milk, and why are
harina [27]
Our bodies produce an enzyme called lactase. This enzyme helps our bodies digest lactose (a sugar found in milk). As we age, the amount of lactase our bodies produce decreases. Some people don’t produce as much as others. If you are lactose intolerant, it means your body doesn’t produce a lot of lactase. One option is to drink milk with lactase added to it.
Example: Lactaid
5 0
3 years ago
Read 2 more answers
According to the theory of global warming which statement is the most likely reason for the current climate change?
Luda [366]

Answer:

If we could see your choices, it would better help us to help you.

Explanation:

But, if you are referring to the most widely accepted theory:

Anthropogenic (man-made) Global Warming, or AGW.  The theory states that man-made greenhouse gases, primarily carbon dioxide (CO2 ), are the predominant cause for the global warming that has occurred during the past 50 years.

5 0
3 years ago
Fred has been diagnosed with a disease that causes him to forget that his relatives have been to see him. what parts of his brai
Marat540 [252]
Hello! The correct answers are: Hippocampus and Amygdala.


I hope that helped you! c:
3 0
3 years ago
In which order do these events occur in human nutrition?
Mazyrski [523]

Answer:

C

Explanation:

option c is correct

ingestion➡️ digestion➡️ absorption➡️ assimilation

8 0
3 years ago
Read 2 more answers
Other questions:
  • Scientists use a standardized taxonomic system to separate organisms into hierarchical groups based on similarities and differen
    9·1 answer
  • Cell division in prokaryotes Is called ___________.
    15·1 answer
  • Which of these helps explain water having a heat specific heat
    6·1 answer
  • disorders can occur as a result of a person missing chromosomes or having too many chromosomes. which of the following cells wou
    14·2 answers
  • Which combinations of traits would be possible in future generations if the genes for fur color and eye color assort independent
    15·1 answer
  • By locating active __________, geologists determine the likelihood of earthquakes in a region
    14·2 answers
  • PLS answer I NEED HELP!!!!!!!!!!!!!!!!!!!!
    7·1 answer
  • 17. The ff. are true of ligands
    8·1 answer
  • In what way would the lack of receptors for local paracrine signal molecules affect animal cells?
    10·1 answer
  • What is the one thing that puts tremendous pressure on our biodiversity and natural resources?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!