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.
Whether you use your bike to commute, run errands or take longer trips, youâll need a way to carry essentials, from a small repair kit to full-on camping gear. A daypack or messenger bag is good for shorter trips, but some of your best gear-carrying options are racks, baskets and bags that fit on your bike.