A) <u>Mutation</u> is the original source of variations for plants and other organisms which develops differences among their respective species
Explanation:
Genetic variation leads to the natural differences between each individual and among individuals of a species. The main cause for this variation is due to alleles that cause variations in the composition of genes or the DNA sequences.
A mutation is a genetic variation which leads to the creation of a new allele in a species population. Each variation in the DNA sequence leads to an allele formation and each allele leads to a difference in character or trait between individuals since they are the alternate version of the original genes.
Although genetic variations could be brought about by crossing over, random fertilization, or independent assortment; mutation is the original source because it provides the basic raw material for all the evolutionary changes.
Sweating
It does not involve the respiratory system.
Answer:
Progesterone activates C-Mos, which phosphorylates maturation promotion factor (MPF)
Explanation:
Progesterone is a steroid hormone that is well known to be involved in embryogenesis, which is secreted by the corpus luteum. During meiosis I, steroid production is limited to progesterone. Moreover, the oocyte maturation factor Mos (cMOS) is kinase expressed in germ-line cells when it is activated by progesterone, where this factor controls oocyte maturation and the arrest at the metaphase of meiosis II by modulating the activity of the Maturation-promoting factor (MPF). This protein (MPF) is a cyclin-dependent kinase complex that promotes mitotic entry via phosphorylation of different proteins required during mitosis.
Answer:
b. a gaming platform haha
Explanation:
b haha mmm
Answer:
1. The dermal layer of the plant is known as epidermis which is outermost thin layer of plants where stomata are found.
2. The dermal layer is like epidermis in human skin which is also a outermost layer and provides a waterproof barrier .
3. The waxy barrier in the epidermis of plant leaf is called the cuticle act as a protective layer and prevent water loss.
4. Stomata are the tiny pores present on the surface of leaves that control the exchange of gases (CO2 and O2) and regulate water loss by opening and closing.
5. The main function of dermal layer (epidermis) is to protect the soft tissues of plants and regulate its interaction with surrounding. Dermal layer act as outermost layer and protect plant leaf and also secret the cuticle that inhibits water loss.