Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Myosin heavy chain (MyHC) expression in the pectoralis of the white-crowned sparrow at three different life stages: wintering, prior to spring departure from wintering grounds, and spring arrival at breeding grounds.
| per cent composition (mean ± s.d.) |
|||
|---|---|---|---|
| life stage |
|||
| pectoral MyHC isoform | winter (%) | spring departure (%) | spring arrival (%) |
| adult fast 1 | 0 ± 0 | 35.2 ± 8.9 | 60.6 ± 24.7 |
| adult fast 2 | 100 ± 0 | 64.8 ± 8.9 | 39.4 ± 24.7 |
