Males, on the other hand, are heterogametic, with one X chromosome and one Y chromosome. Other reptiles governed by GSD have a system, similar to one found in birds, with Z and W sex chromosomes. In this caseâwhich governs all snake speciesâmales are the homogametic sex (ZZ) and females are the heterogametic sex (ZW).
Yosemite Packing List. Your trip with Four Season Guides is sure to be one you never forget, but a big part of having lots of fun is being well prepared! Even though we provide the camping equipment essentials, there are a few things we want to be sure you donât forget! Hiking boots â well broken in!! Mid-weight boots with ankle support are best.
Yosemite National Park covers nearly 1,200 square miles of mountainous terrain in the Sierra Nevada of California. Yosemite is open all year, though some areas of the park are inaccessible by car from approximately November through May due to snow. You can drive your car into and around Yosemite, though we encourage you to use shuttles in some areas.