Which of the following is the meaning of the chromosome theory of inheritance as expressed in the early 20th century?
A) Individuals inherit particular chromosomes attached to genes.
B) Mendelian genes are at specific loci on the chromosome and in turn segregate during meiosis.
C) Homologous chromosomes give rise to some genes and crossover chromosomes to other genes.
D) No more than a single pair of chromosomes can be found in a healthy normal cell.
E) Natural selection acts on certain chromosome arrays rather than on genes.
Incomplete Dominance in Sickle-Cell Inheritance
determining the mode of inheritance
Gate control theory. A. open gate, B. closed gate
Set-Point Theory
Distribution of sex chromosomes from generation to generation. All children receive an X chromosome
Photograph of a puff within a polytene chromosome