When two or more genes contribute to the phenotypic expression of a single characteristic, it is known as:
a. punctuated equilibrium
b. polygenetic inheritance
c. clinal expression
d. genetic drift
Question 2
This primate was a diurnal quadruped with a mixture of money and ape features: its lower molars had five cusps like an ape its skull had forward-facing eye sockets protected by a bony wall an endocast of the cranium reveals that it had a visual cortex larger than that found in Prosimians, but the brain was smaller than that of more recent anthropoids and it had marked sexual dimorphism and was no bigger than a modern house cat. It is a:
a. Dryopithecus.
b. Ardipithecus.
c. Homo habilis.
d. Aegyptopithecus.
e. Australopithecus afarensis.
Diagram of a flagellate stramenopile cell, showing characteristic flagellar hairs.
Births to Single Mothers
(a) Monozygotic (MZ) twins result from the fertilization of a single egg by a single sperm. After on
Example of a single-nucleotide polymorphism (SNP)
Expression of the Hoxc6 Gene
The relationship between recombination frequency and physical distance between genes