Sentences with phrase «mating type»
"Mating type" refers to the classification system used in some organisms, such as fungi and algae, to determine whether individuals can reproduce with each other. It is like a "gender" or "compatibility" label that helps organisms find a suitable partner for reproduction. Organisms with the same mating type can mate and produce offspring, while those with different mating types cannot. Full definition
Some members of Cryptococcus, a family of fungus linked to human disease, can have tens of thousands of different mating types.
sciencedaily.com
That is, until a previous study by Heitman and his colleague and former fellow Xiaorong Lin showed that Cryptococcus engaged in a phenomenon known as unisexual reproduction, or sex involving fungi of the same mating type.
These resultant haploid cells can fuse with other haploid cells of the opposite sex or mating type during fertilization to create a new diploid cell, or zygote.
At one location or locus known as P / R, genes encode pheromones and pheromone receptors that help the fungus recognize compatible mating types.
C. neoformans has a defined a-α opposite sexual cycle; however, > 99 % of isolates are of the α mating type.
When deprived of nitrogen, haploid cells of opposite mating types can fuse to become a diploid zygospore which forms a hard outer wall that protects it from adverse environmental conditions.
Sexual conjugation occurs when cells starved for at least 2 hrs in a nutrient - depleted media encounter a cell of complementary mating type.
«Sexual reproduction does not require males and females, all it requires is the fusion of sex cells from two different mating types.»
C. neoformans exists in two distinct «mating types,» analogous to the sexes in animals.
The slime mold Physarum polycephalum exists in more than 700 mating types, though not all of them are sexually compatible.
But the vast majority of the cells found in nature are of only one mating type.
It describes how a population evolves from different mating types producing same - sized sex cells (or gametes) to mating types producing different - sized gametes, such as where there are distinct males and females.
Because greater numbers of gametes gives one mating type a selective advantage — more chance of successful fertilisation — the other mating type will be forced to produce larger, and therefore fewer, gametes to enable the production of the larger zygote.»
Published in the journal Ecology and Evolution, Dr da Silva tested this theory using data from studies of Volvocine algae, in which species vary considerably in their reproductive patterns: some in which two mating types produce gametes of the same size that can move (motile); others that produce motile gametes of different sizes; and others in which one mating type produces small, motile gametes and the other mating type produces large non-motile gametes (males and females).
C. albicans is known to undergo a parasexual cycle involving heterothallic fusion of α and a mating type cells followed by stochastic, concerted loss of chromosomes [44].
Though it has two mating types — namely, «a» and «alpha» — the vast majority of the fungi found in nature are of the alpha variety.
This species has a bipolar mating system with two mating types: a and α [26]--[28].
Genetic determinants of the life cycle — the mating types.
Switching the mating types of lab strains used to require a process with many steps, including manual dissection of spores using an exceptionally fine needle under a microscope.
What is your Mate Type?