What insight did Nettie Stevens's studies of the beetle Tenebrio molitor provide about the chromosome theory of inheritance?
A) Genes are located on chromosomes.
B) The number of autosomal chromosomes varied between gametes.
C) Crossing over occurs between homologous chromosomes.
D) Sex is determined by the presence of an X or Y chromosome in the male gamete.
E) Chromosomes assort independently into the haploid gametes.
D
You might also like to view...
The negative logarithm of the hydrogen ion concentration in the solution is referred to as:
A. pH B. atomic mass C. -OH concentration D. electronegativity E. specific heat
An individual who contains cells that are mutated is called a chimera
Indicate whether the statement is true or false
Tropical savannas typically lack trees or shrubs
Indicate whether the statement is true or false
We define body axes and planes:
A. with respect to immutable external coordinates B. by homology with ancestral species