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.
Big Oak Flat Road (Hwy 120) closed into Yosemite Valley; no access to Yosemite Valley via Hwy 120. Evening Programs. Yosemite National Park offers a range of natural and cultural history programs that will enrich your experience while in the park. Check out the Yosemite Guide to see what programs fit into your plans. During the warmer months, evening presentations are held at the amphitheaters at Half Dome Village and Yosemite Valley Lodge. In the winter, theyâre held indoors at Yosemite Valley Lodge. The free programs are typically one hour long, and reservations are not needed. Please check the Yosemite Guide for up-to-date information and offerings. Remember to bring warm layers as evenings are typically cool, even in the summer.