Xenopus laevisFor the past more than 25years, we have been focusing on the developmental and reproductive biology of the female gametes, oocytes, and eggs, of the African clawed frog .doi:10.1002/rmb2.12314Ken-ichi SatoAlexander A. Tokmakov...
[9]. There can be several different reasons why some species evolve XY and others ZW systems. One factor is which kind of sterility mutation becomes fixed first during the evolution from hermaphroditism to separate sexes. If a dominant female-sterility mutation fixes, that drives the evolution of...
In seed-bearing plants, the male gametes are the pollen while the female gametes are enclosed in the ovules of the plant. However, in plants, the gamete may or may not be always a haploid cell.Types of Gametes What are examples of gametes? What are the different types of gametes? The ...
CONCEPT 6.6 The cytoskeleton is a network of fibers that organizes structures and activities in the cell细胞骨架是一个组织细胞结构和活动的纤维网络(Page 112) Roles of the Cytoskeleton: Support and Motility 细胞骨架的作用:支撑和运动 (Page 112) Components of the Cytoskeleton 细胞骨架的组成部分 (Page...
Expression of inhibin/activin subunits in the oviduct and epididymis: a possible role in gamete/embryo biology. Journal of Reproduction and Fertility 25: 40 Objective: This study aims to study obesity in Saudi female population represented by Makkah community. Design: To study obesity, leptin ...
Both sexes released gametes through the mouth. The negatively buoyant oocytes (550–600µm in diameter) quickly settled on the rocks and soft sediments surrounding the female. Lecithotrophic embryonic and larval development occurred on the substratum. Fully developed planula larvae were detected ...
A hermaphrodite refers to one that has both male and female gonads that are functional. Thus, that individual is capable of producing male and female gametes at least at one point in their lifetime. Etymology: comes from the name of the minor Greek god Hermaphroditus, son of Hermes and ...
Trans-differentiation of somatic cells into gametes Bone marrow has been reported to be a potential source for female [27] as well as male [28] germ cells. Kashani et al. [29] showed that retinoic acid can induce differentiation of mouse bone marrow stem cells into male germ cells. This...
The percentage of animals with mature gametes had a clear peak in winter, with over 30% of the animals being mature (Fig. 3a). The average number of eggs per female was also highest in winter (Fig. 3b). Some mature females were found every month except for April, but mature males ...
Gametogenesis in Malaria Parasites Is Mediated by the cGMP-Dependent Protein Kinase Malaria parasite transmission requires differentiation of male and female gametocytes into gametes within a mosquito following a blood meal. A mosquito-der... L Mcrobert,CJ Taylor,W Deng,... - 《Plos Biology》 被...