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.
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Answer:
There are 11 major organ systems in the human body.
Explanation:
The 11 organ systems include the integumentary system, skeletal system, muscular system, lymphatic system, respiratory system, digestive system, nervous system, endocrine system, cardiovascular system, urinary system, and reproductive systems.
The nine major organ systems in the human body are the integumentary system, the musculoskeletal system, the respiratory system, the circulatory system, the digestive system, the excretory system, the nervous system, the endocrine system, and the reproductive system.
Brainliness please!
Answer:
All the three statements about maltose are correct.
Explanation:
1) Maltose is formed from the combination of two same type of monosaccharide i. e. two glucose molecules.
2) Maltose is soluble in water. Its solubility value is 1.080 g/mL.
3) Maltose is a reducing sugar because it act as a reducing agent due to the presence of aldehyde group with glucose molecules.
People who are AB can receive blood from all types of blood groups.
<h3>What is Blood group?</h3>
This is the classification of blood based on polymorphisms in antigens on the surfaces of the red blood cells.
There are four types of blood groups and the AB is known as universal recipient which means it can receive blood from any of them. Also the patient should receive blood that is positive for Rh as it will not make anti-Rh antibodies which may destroy cells of the fetus.
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Answer:
a. Directional selection favors one end of the phenotype distribution, whereas
stabilizing selection favors intermediate over extreme phenotypes
Explanation:
Directional selection is called directional because it favors one phenotype over another, and stabilizing selection finds a balance between phenotypes.
