Answer:
Genetic drift
Explanation:
Genetic drift describes random fluctuations in the numbers of gene variants in a population. Genetic drift takes place when the occurrence of variant forms of a gene, called alleles, increases and decreases by chance over time. These variations in the presence of alleles are measured as changes in allele frequencies.
Answer:
M.G. may not have been counselled properly on other non-pharmacological measures for the management of heart failure, exercise included.
Explanation: Non-pharmacological measures for the management of heart failure
:
- Compliance—give careful advice about disease, treatment, and self help strategies
- Diet—ensure adequate general nutrition and, in obese patients, weight reduction
- Salt—advise patients to avoid high salt content foods and not to add salt (particularly in severe cases of congestive heart failure)
- Fluid—urge overloaded patients and those with severe congestive heart failure to restrict their fluid intake
- Alcohol—advise moderate alcohol consumption (abstinence in alcohol related cardiomyopathy)
- Smoking—avoid smoking (adverse effects on coronary disease, adverse haemodynamic effects)
- Exercise—regular exercise should be encouraged
- Vaccination—patients should consider influenza and pneumococcal vaccinations
Answer:
allopolyploidy
Explanation:
Polyploidy is the condition by which a cell might have more than two chromosome sets that form homologous pairs. It might occur due to a failure or abnormality in cell division.
Autopolyploidy
Refer to a type of polyploidy in which an organism has more than two copies of homologous chromosomes. It results from the duplication of a group of chromosomes of the same species. Autopolyploid individuals have <u>at least three groups of homologous chromosomes</u>. Autopolyploidy is produced by the<u> gamete fusion of the same progenitor - same species</u>-, duplicating the number of chromosomes of diploid species. The autopolyploid cell has groups of homologous chromosomes. Autopolyploidy is produced mainly due to non-disjunction during meiosis.
Allopolyploidy
Refer to another type of polyploidy in which species have more than three sets of chromosomes in their cells. Allopolyploidy <u>occurs when two different species mate</u>, leading to the fusion of gametes that belong to different species and produce a new hybrid. The chromosomic complement has more than two copies of chromosomes. The hybrid is infertile with the parental species. The allopolyploid cells have chromosome groups that are not homologous.
In the exposed example two different species mate and produce a hybrid species.
This would be considered a mutation.
Answer:
the central nervous system
Explanation:
The nervous system is made up of the central nervous system and the peripheral nervous system: The brain and the spinal cord are the central nervous system.
