a. Whales evolved from hippos.
b. Hippos evolved from whales.
c. Hippos and whales do not share a common ancestor.
d. Hippos and whales evolved from a common ancestor.
12. Think about the factors that will influence the evolution on humans in the future. Name one factor that would exert influence through the process of natural selection and one factor that would exert influence through artificial selection.
a. natural selection: genetic engineering; artificial selection: demands placed on the brain
b. natural selection: individual mating choice; artificial selection: diseases
c. natural selection: diseases; artificial selection: genetic engineering
d. natural selection: demands placed on the brain; artificial selection: diseases
16. Niles Eldredge found evidence in trilobite fossils of a pattern of evolution in which short periods of large change are mixed in with longer periods of little or no change. This pattern is called WHAT.
I think it is punctuated equilibrium, but not sure.
PLEASE ONLY ANSWER IF YOU KNOW THEY ARE CORRECT!!!!
False
OPTIONS:
a. The organisms vary in trait
b. The variation is inherited
c. More young are born than can survive
d. Some individuals are better adapted to the environment
Answer:
d. Some individuals are better adapted to the environment
Explanation:
Kettlewell’s biological experiment, which was conducted in England, was to study the evolutionary changes taking place in trees in relation to the appearance of dark-colored moth.
It was observed that white moths were more common before the industrial revolution. After the industrial revolution, which changed the background of the environment of the moths due to pollution, the moths became easily seen and obvious to predatory birds.
It was discovered that peppered moths were selectively preyed on by birds depending on their body color, which serves as the most important factor that determines if moths can survive predation by blending with the background of their environment. This led to the evolving of moths of their color to blend with the background of their environment, which makes them hide from the birds that prey on them.
Kettlewell was trying to verify the factor in evolution by natural selection, which says, “some individuals are better adapted to the environment”.
The factor which makes the permeability of the plasma membrane a main reason for the cells existence is that this condition makes the cell a to take in important required substances and throw out waste. Thus, the life of the cell is based the fact that the plasma membrane is selectively permeable.
Further Explanation:
Eukaryotic cells are the cells which have membrane-bound organelles, membrane-bound nucleus, and several chromosomes. They have a true nucleus and have some similarity with prokaryotic cells like plasma membrane, cytoplasm, and ribosomes.
Plasma membrane is selectively permeable as they allow only certain molecule to pass through them. This permeability is dependent on many factors one of them being the need of the molecule by the cell. The membrane of the cell is made up of following components;
1. Phospholipid bilayer
2. Transmembrane proteins
3. Interior protein network
4. Cell surface markers
Out of these components the one responsible for maintaining the movement of the chemicals or molecules across the membrane is the phospholipid bilayer and the transmembrane proteins. The major component which acts as an permeability barrier is the phospholipid bilayer.
Learn more:
1. Learn more about which structure is unique to eukaryotic cells brainly.com/question/4493579
2. Learn more about the purpose of transfer RNA brainly.com/question/236807
3. Learn more about translation brainly.com/question/273550
Answer Details:
Grade: High School
Subject: Biology
Chapter: Cell biology
Keywords:
Eukaryotic cell, DNA, cell membrane, ribosomes, nucleus, plasma membrane, cytoplasm, chromosomes, endoplasmic reticulum, nucleolus, phospholipid bilayer, transmembrane proteins.