The risk of schizophrenia among biological relatives is greatest for identical twins. This is a true statement.
<h3>What is schizophrenia?</h3>
Schizophrenia is a neurological disorder that causes an affected individual to lose touch of reality.
Schizophrenia can be caused by the following:
- Genetics: Gene defects caused by mutation such as deletions or duplications of genetic material increases risk of schizophrenia.
- Environment: Urbanicity, migration, cannabis, childhood traumas, infectious agents, obstetrical complications and psychosocial factors
- Brain chemistry and circuit
- Brain abnormalities: Impaired communication between brain regions leads to the associated symptoms and cognitive changes.
According to research, the risk of schizophrenia among biological relatives is greatest for identical twins because they are genetically identical.
Learn more about genetics here:
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Answer: Option A) True
The statement is true
Explanation:
Impulses of motor neurons could inhibit the cells of the effector (e.g skeletal muscles, gland). Hence, the axons cause the release of glycine which inhibits or checks muscular contractions.
Answer:
cartilaginous joints
Explanation:
The joint system is formed by the joints, which can be defined as the joining region between two or more bones. All bones in the body except the hyoid bone are articulated with at least one other bone. There are several types of joints, among them, the cartilage joints, those that have cartilage between the bones. If this cartilage is hyaline, the joint is called synchondroses; if the cartilage is fibrous, the joint is called symphyses.
The joints are responsible for holding the bones together and allowing the skeleton to move.
Answer:
A.
Explanation:
The population of herbivores wouldn't decrease because their food source is being increased. Predators wouldn't leave because more herbivores come to eat the increased number of producers, thus more than likely increasing the number of predators.
Looking at the second cross, a 2:1 phenotypic ratio (instead of the typical 3:1) usually indicate a lethal homozygous genotype. Based on the question, it’s sensible to assume that a snapdragon homozygous for the aureal allele, which should have a even lesser chlorophyll count than the heterozygote, can’t even make it to the birth of the plant, thus the GAGA type never existed in reality. Under this assumption, we can deduce that the 2/3 aurea is of genotype GAG and the 1/3 green offspring of genotype GG. If a punnet square was pulled including the lethal genotype, it will be easily seen that the aureal allele is the dominant type. The first cross of genotype GG x GG conform to this conclusion. And the third is therefore a test cross between the homozygous recessive GG and the heterozygous GAG (aurea), with the result abiding our theory. Correct me if I was wrong, the GA allele is termed dominant negative as a single copy of it results in a deficit in chlorophyll amount. But anyway, the explanation above should give you an answer to the relationship between the G and GA allele.
