Because it has no scientific explanation. As a matter of fact it has no explanation.
The things that black cats cause bad luck are a myth, and do not have any proof or explanation, meaning it cannot be concluded neither as a hypothesis nor scientific.
Hope it helped,
BioTeacher101
Answer:
<u>the genotype is (Hh)</u> <u>phenotype hybrid which is a Guinea pig with hair</u>.( hybrid means its not a pureblood haired Guinea pig. pureblood means same. EX: (GG). Guinea pig with hair. its also known as heterozygous, and zygous.)
witch also means its heterozygous. there is no percentage chance for something to have a different genotype of phenotype.
Answer:
The correct answer would be calcium ion and cAMP.
Secondary messengers refers to the intracellular signaling molecules which pass the signals from the receptors located on the surface of the cell to the target molecule present within the cell.
The secondary messengers can be classified into three major class:
- Cyclic nucleotide for example cAMP (cyclic adenosine monophosphate), cGMP (cyclic guanosine monophosphate)
- DAG (diacylglycerol) and IP₃ (inositol triphosphate)
- Calcium ions (Ca⁺⁺)
Hence, from the given options, calcium ion and cAMP would make the correct choice.
Increased in pitch (frequency). It's the doppler effect.