問題詳情
37.The tendency for characteristics to be more different in sympatric populations of two species than in allopatric populations of the same two species is called
(A) competitive exclusion
(B) character displacement
(C) niche shift
(D) speciation
(E) dynamic equilibrium
(A) competitive exclusion
(B) character displacement
(C) niche shift
(D) speciation
(E) dynamic equilibrium
參考答案
無參考答案
內容推薦
- Unlike animals, in plants(A) cell division requires the formation of a cell plate (B) mitosis inv
- A geneticist found that a particular mutation had no effect on the polypeptide coded by a gene. T
- What happens at the nodes of Ranvier?(A) ions flow through the plasma membrane (B) the myelin she
- Which gland and organ work together to regulate the sodium level in the blood?(A) adrenal gland a
- 31-65題’每題2分。70%_:_說明:每題選出一個最適當的選項，標示在答案卡上。每題答對得2分，答錯倒扣0.5分，未作答者 ，不給分亦不扣分。__A nursing infant is ab
- The function of a mature B cell is to(A) make antibodies against several different antigens(B) ma
- During a secondaiy immune response,(A)selected B cell generates antibody-producing effector B cel
- Which part of a bone is likely to have the greatest concentration of cells?(A) compact bone (B) s
- Which of the following hormones has the broadest range of targets?(A) ADH (B) oxytocin (C) TSH (D
- What happens to a tKNA molecule during and after its participation in protein synthesis?(A)it is
內容推薦
- Noncyclic photophosphorylation is different from cyclic photophosphorylation in that(A) noncyclic
- Which plant hormone induces and maintains dormancy?(A) gibberellins (B) auxins(C) cytokinins (D)
- What is the function of calcium ions in muscle contraction?(A)They cause actin and myosin filamen
- Which organ system is present in flatworms?(A) muscular (B) digestive (C) reproductive (D) excret
- Which of the following structures is incorrectly paired with its function?i(A)epididymis - matura
- A graduate student growing plant cells in a laboratory dish wanted to cause them to _, so the gra
- An area of habitat where a population's reproductive success exceeds mortality is(A) the res
- Which of the following is an INCORRECT statement about fungi? (A) they are heterotrophs (B) most
- A biologist isolated a gene from a human cell, attached it to a plasmid, and inserted the plasmid
- Fermentation is essentially glycolysis plus an extra step in which pyruvic acid is reduced to for
- During kidney dialysis, blood and a dialyzing solution are separated by a semipermeable membrane.
- It takes much longer for sex hormones and other steroids to produce their effects than it takes f
- A peak in_triggers ovulation on about the_day of the monthly cycle.[(A) progesterone ... fourteen
- Mitosis and cytokinesis result in the formation of_, meiosis and cytokinesis result in the format
- In a laboratory, a scientist feeds yeast cells sugar made with radioactive carbon and keeps oxyge
- During the early development of a human embryo the_eventually forms_.(A)blastocoel ... arch enter
- Which of the following people would probably be making the most antidiuretic hormone?|(A)a person
- You would expect a cell with an extensive Golgi apparatus to(A)make a lot of ATP (B) secrete a lo
- The brain perceives the brightness of light by sensing(A) the voltage of action potentials in the
- In what symptoms may be resulted by damage to the corpus callosum?(A) loss of short-term memory(B
- What does the Hardy-Weinberg expression 2pq represent?(A) the gene frequency of the dominant alle
- What prevents an action potential from propagating in both directions along an axon?(A)During the
- Which of the following best represents the path of a signal that causes muscle contraction?(A)mot
- Which developmental sequence is correct?(A)fertilization→gastrulation→blastula formation→morula f
- in the atmosphere, the partial pressure of oxygen is 0.21 atmosphere; of carbon dioxide, 0.000