Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Academic Affiliation Zoology Creator Haertel, John David Decade 1960-1969

Experimental hybridization between Rana pretiosa pretiosa Baird and Girard and Rana cascadae Slater

Creator:

Haertel, John David

Abstract:

Experimental crosses between Rana pretiosa pretiosa Baird and Girard and Rana cascadae Slater, resulted in viable hybrids. Reciprocal differences at the time of fertilization are indicated. A high level of success in producing viable hybrids can be obtained if Rana pretiosa pretiosa is the female of the parent species, The...

Resource Type:

Masters Thesis
A comparative study of the chromosomes from five species of the genus Rana

Creator:

Haertel, John David

Abstract:

The karyotypes of five species of ranid frogs were determined from metaphase plates of bone marrow cells. The colchicine, hypotonic- citrate, blaze-dry technique was used to obtain the plates. Morphometric datawere obtained from the karyotypes and compared with other species of the genus Rana. Like most other members of the...

Resource Type:

Dissertation