There are many facts about arachnids.
Here are some:
1. Arachnids are invertibrates (No backbone)
2. Arachnids include spiders, mites, harvestmen, and pseudoscorpions.
The scientific name is Arachnida, and the higher classification name is Chelicerata.
The one that is not an intercellular communication would be : A message is distributed across plasma membrane
for this occurrence to happen, a cell doesn't has to interact with other cell, which also commonly described as intracellular communication
hope this helps
First we have to figure out whether the allele controlling for that trait is dominant or recessive. From female A, the pedigree indicates that she shows the trait, but neither of her parents shows the phenotype of the trait. Female A is only possible to have the trait showed if both of her parents carry an allele of the trait. So, that allele for controlling the trait should be recessive and their parents are heterozygous as neither of the parents shows it in their phenotype.
After we figured out the allele is recessive, we can easily determine the genotype of female A. Traits that are controlled by recessive alleles can only be shown in phenotypes if theres no dominant allele existing. Therefore, the genotype of female A must be both recessive, and that means she's homozygous (recessive).
Due to global warming, the climatic conditions such as rise in temperature of the coral habitat in the oceans changes. The corals become stressed by changes in conditions. Under these conditions, corals expel the symbiotic algae living in their tissues. This turns corals completely white. This is called coral bleaching. Due to coral bleaching, it becomes more stressed and this can leads to its death. Algae also may not be able to survive alone.
