Observed in protozoa ciliates, this term refers to the characteristic of having two kinds of nuclei in one cell which each have differing genetic functions.
Sexual dimorphism, or differences in physical characteristics between males and females of a species, is significant in evolutionary biology because it can provide insights into the evolutionary history and behavior of a species. These differences can help researchers understand how natural selection has shaped the traits of males and females differently, often in response to different reproductive roles and strategies. By studying sexual dimorphism, scientists can gain a better understanding of how species have evolved and adapted to their environments over time.
Sexual dimorphism can drive evolutionary change by creating competition between males for access to mates, leading to traits that enhance mating success. This competition can result in the evolution of exaggerated secondary sexual characteristics, such as elaborate courtship displays or physical features that attract mates. Additionally, sexually dimorphic traits may be favored by natural selection if they enhance reproductive success, contributing to the overall genetic diversity within a population.
The nuclear envelope, a double membrane structure, separates the nuclear contents from the cytoplasm in eukaryotic cells. Nuclear pores in the envelope regulate the transport of molecules in and out of the nucleus, ensuring proper compartmentalization and functioning of the cell.
The nuclear wall is not a scientifically recognized structure. It may refer to the nuclear envelope, a double membrane that surrounds the nucleus of eukaryotic cells, or it could be a misunderstanding of the nuclear membrane or nuclear lamina, which are components of the nuclear envelope.
it means "to not".
males in the population look distinctly different than females
Ascaris roundworms exhibit sexual dimorphism, where males are typically smaller and have a curved tail, while females are larger and have a straighter tail. This dimorphism allows for efficient mating and reproduction within their host's intestines.
It has to do with who will be the dominant male.
Some fungi exhibit sexual dimorphism, where the male and female structures look different. For example, in the pathogenic fungus Histoplasma capsulatum, the male structure (conidia) is asexual and tubular, while the female structure (microconidia) is smaller and oval-shaped. This dimorphism helps in the reproductive process and adaptation to different environments.
Sexual dimorphism in humans is likely to stay relatively constant over time, as it is influenced by genetic factors and evolutionary history. However, various external factors such as changing societal norms and cultural practices could impact the expression of sexual dimorphism in different populations.
Thermal dimorphism is the capacity to form different structures at different temperatures. For example, some fungi exhibit thermal dimorphism. They exist as molds when outside the human body and as yeasts when they are in the human body.
Seasonal dimorphism.
Some are. Baldness is a sexual dimorphism that has been established due to the preferences of females.
sexual dismorphism
A health personage who studies all aspect of sex, including differentiation and dimorphism, and, particularly, sexual behaviour.
Ther is no apparent sexual dimorphism in Red Tailed Black Sharks.
Sexual dimorphism, or differences in physical characteristics between males and females of a species, is significant in evolutionary biology because it can provide insights into the evolutionary history and behavior of a species. These differences can help researchers understand how natural selection has shaped the traits of males and females differently, often in response to different reproductive roles and strategies. By studying sexual dimorphism, scientists can gain a better understanding of how species have evolved and adapted to their environments over time.