Speciation forms new species.
Directional selection favors one extreme of a phenotype, which leads to evolution and adaptive change of a species.
Disruptive selection selects against the average and leads to evolution and genetic variation of a species.
Stabilizing selection favors the average individual in a population, which does not lead to adaptive change or evolution, and reduces variation.
Answer:
enable capillarity
Explanation:
It is well known that water tends to adhere to the walls of the vessel in which it is contained. This is due to the force of adhesion which is defined as the force of attraction between unlike molecules. Cohesion is defined as the force of attraction between like molecules. In the case of a plant, cohesion of water molecules in the xylem vessels prevents the water column from breaking. The forces of adhesion, surface tension and cohesion are the basis of capillarity,that is, the rise of liquids in capillary tubes.
The main 2 observation which Lamarck made is:
<u>1. </u><u>Use and Disuse of Organ</u>
<u>2.</u><u> Inheritance of Acquired Characters.</u>
The Use and Disuse of Organ states that, only those character will last longer or pass on to next generation which are getting in use day by day. And, the organ will vanish if it not in use. Like, Tail in Human.
Inheritance of Acquired Characters, a theory that suggests physiological changes that an organism acquires throughout the course of its existence might be passed on to children. It's often referred to as the theory of adaptation or Lamarckism, after French biologist Jean-Baptiste Lamarck's theory of evolution.
To know more about Lamarck's theory, click on the below link,
brainly.com/question/15405614
#SPJ4
Answer:
Option D, at the branch tips
Explanation:
Phylogeny tree is just like a family tree in which the roots of the tree that are its base represents the ancestral lineage. While moving towards the branches , the time is considered to be moving forwards as the organism which lie at the tip of the branches are the ones which have evolved from the ancestral lineage lying at the base. Thus, the branches at the end of a tree are the ones which have the most recently evolved organism.
Thus, option D is correct
Answer:
Ithink the answer is tennis ball because the tennis ball is small.
