asexual reproduction occurs in a form that is partly fission and partly budding; portions are constricted transversely or laterally, very much smaller than the whole animal, and these grow out into new animals which may separate or remain attached in chains. In Salps, chains are formed sometimes...
Discover the processes of reproduction in animals. Compare sexual reproduction to asexual reproduction in animals with examples of the different...
Aphids, for example, will favor asexual reproduction when their environment is stable. When the environment is going to turn cold, most species of aphids reproduce sexually, because sexual reproduction produces eggs that are freeze tolerant and can diapause during the winter (Simon et al. 2002)....
The causes and mechanisms of non-sexual reproductive modes in animals are almost as diverse as the animal world itself, and are described here in detail. Some asexual lineages have also developed novel mechanisms to substitute sex and mimic its evolutionary advantages....
The remaining 60 genes are in the eight palindrome sequences, and some have orthologs in the X chromosomes, such as RBMX (Delbridge et al. 1999). These 60 ampliconic genes are in 9 gene families and encode 9 distinctive proteins that are expressed in the testis. Moreover, the human MSY...
There are different stages that animals, including humans, go through. The juvenile phase is the phase of growth and development till the animal reaches its maturity, after which it can reproduce sexually. In different animals, there are some cyclical changes that occur during reproduction. ...
Some animals are able to reproduce asexually. Asexual reproduction does not require a partner, and involves the parent passing all of their genes to their offspring. Insects reproduce in many different ways. Most reproduce sexually, but some (including some stick insects, some bees and some wasps...
These autonomous females don't need a mate to give birth. And new research suggests that asexual reproduction may even have evolutionary advantages.
which arise indirectly from the brains. Two thickenings in the upper part of the brain constitute the well-developed visual cortex of the animals. Though the reptile brains are considered as less developed than mammals, it is observed that turtles show social behavior. Wood turtles are even bett...
inhox3RNAi animals, revealing a decrease in progeny size consistent with the increase in segmentation observed via physical compression (Fig.2d, e). Altogether, these data indicate that the planarian Hox genespost2bandhox3are required for A/P tissue segmentation associated with asexual reproduction....