Examlex
A morphogen is a chemical agent that affects the differentiation of cells and the development of form.
Ancient Society
Human societies that existed in a time period that could be considered ancient or prehistoric, often characterized by early developments in social organization, culture, and technology.
Continuous Matter
A classical concept describing matter as an infinitely divisible entity, unlike the quantum concept which describes matter in terms of discrete particles.
Observable Properties
Characteristics of a substance that can be determined through direct observation or with the help of simple tests without changing the substance's identity.
Rational Arguments
Reasoning conducted or assessed according to strict principles of validity.
Q1: How are viruses classified by the ICTV?<br>A)
Q3: Which one of these is not a
Q10: Which of the following is the most
Q14: Gene targeting has been used in mice
Q16: The Hardy-Weinberg principle:<br>A) states that allele and
Q30: HIV is a _.<br>A) lentivirus<br>B) retrovirous<br>C) archeal
Q36: A large number of copies of any
Q52: The continuous, low-level extinction rate of species
Q57: Embryonic stem cells cannot develop into _
Q76: DNA Pol III catalyzes the addition of