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SAT II

SAT2生物考试中常用词汇总结(I开头)

来源：毕达教育发布时间：2012-02-23 16:44:37

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下面为大家整理的是以字母I开头的SAT2生物考试中常用词汇。掌握一定的生物词汇是备考SAT2的首要前提。所以，各位考生一定要多加重视词汇的积累，预祝各位考生考试成功。

Imprinting(印记)

Instinctual behavior in which social bonds are formed during early development. Typically used with
the example of a newly hatched bird or other animal identifying and treating the first moving object it
sees as its mother.

incomplete dominance(不完全显性)

Occurs when two different alleles of the same gene are both partially expressed in a heterozygote.
The resulting phenotype is intermediate between the homozygous phenotypes of the two alleles.
Color in a four o’clock flower is an example of incomplete dominance.

independent assortment(单独分类)

Mendel’s conclusion that during gamete formation, the segregation of one pair of genes has no
influence over the segregation of another pair of hereditary units. Two different traits will thus
be inherited independently of each other. This law holds true, except for linked genes. It is often
called Mendel’s second law.

inheritance of acquired traits(获得性状遗传)

A crucial, and incorrect, aspect of Lamarck’s theory of evolution. Lamarck believed that the traits
a parent acquired during its lifetime would be passed on to its offspring.

Instincts(本能)

Behavior that is hardwired into the brain of an organism; behavior that does not have to be learned.

Insulin(胰岛素)

Hormone secreted by the pancreas that reduces blood sugar levels. A lack of insulin can result in diabetes.

Interphase(间期)

The phase of the eukaryotic cell cycle in which the cell prepares for division, primarily by replicating
its DNA. After interphase, the cell enters mitosis.

intertidal zone(潮间带)：涨潮线与落潮线中间之地区

The most shallow zone in a marine habitat. Periodically dry or wet with the changing tides. Algae,
sponges, mollusks, starfish, and crabs inhabit this zone. Also called the littoral zone.

Ion(离子)

An atom or molecule that has lost or gained an electron and consequently has a positive or negative charge.

Isotonic(同渗压的)

A situation in which the concentration of solutes in a solution is equivalent to what it contains.
There is no concentration gradient in isotonic solutions and no net flow of solutes or water.

以上就是关于SAT2生物考试常用词汇的全面内容，是以I开头的。各位考生可以作为备考时的参考资料，希望对各位考生的SAT2考试有所帮助。