b. meiosis ensures that the gametes are identical to the cell that produced them. cIn vertebrate animals, spermatogenesis differs from oogenesis in that: A) Oogenesis starts at puberty B) Oogenesis produces larger diploid gametes while spermatogenesis form...
These autonomous females don't need a mate to give birth. And new research suggests that asexual reproduction may even have evolutionary advantages.
Cloning has not been adopted as a common breeding tool in farm animals as it has been found to be inefficient. The high abortion and fetal mortality rates that are commonly observed are attributed to incomplete reprogramming of the somatic nuclei by the cloning process. This situation, and its...
Freshwater pearl mussels are among the longest-living invertebrates, with lifespans that can exceed 280 years. Their longevity is attributed to their slow metabolism and the cold, clean waters they inhabit. Freshwater pearl mussels are found in clean, fast-flowing rivers and streams in Europe and ...
Discover the processes of reproduction in animals. Compare sexual reproduction to asexual reproduction in animals with examples of the different...
Each lobe bears from 70 to 150 tentacles that are arranged in rows, and there’s a balance organ in the spaces in between them. This is called the rhopalium and lets the jellyfish tell up from down and right from left. There are also organs for odors and light perception. The ...
A large number of these animals reproduce through asexual budding. That’s a reproduction process where fragments break off the body and develop into new life. Other species actually stretch their base and split across the middle. The act results in two new creatures. In yet other families, sm...
What are the animals that lay eggs? Reproduction: Organisms reproduce in many ways. For those that reproduce sexually, some lay eggs and others have live young. There are other ways of reproducing, however, including several asexual strategies. For example, some single-celled organisms simply divi...
A recent study suggests that insects branched out from crustaceans on the tree of life April 9, 2025 Odd-Looking Blue Creatures Are Washing Up in Large Groups on California’s Beaches Once Again Strandings of these jellyfish-like animals, sometimes called “by-the-wind sailors,” usually mean...
Our analysis indicates that planarian hox3 genes have shared roles in the negative regulation of adult tissue segmentation and asexual reproductive behavior. Yet, while hox3 RNAi increases the frequency and duration of fission behavior, these attempts are ultimately unsuccessful (Fig. 3b–e). Therefor...