Answer:
50
Explanation:
Recent researches claim that the mid-life crisis may occur from the ages of 45–64. They last about 3–10 years in men and 2–5 years in women.
It was invented in London in 1957 by a 40-year-old Canadian named Elliott Jaques. He claimed that people in their mid-30s typically experience a depressive period. He announced that in this period people realize that their lives are halfway over and that death is closer: Death will happen to them, too. However, through times life spans in rich countries were increasing by about 2.3 years per decade. And nowadays the mid-life crisis age also has increased.
Answer:
Option d. None of the above
Explanation:
- Genes do not blend together at the level of genotype. In fact, genotype is a one of its characteristic features.
- The function of gene is to carry the genetic information whereas its the amino acids that code for a protein.
- Genes do not form cluster of genes through mutation, it is formed by divergence gene duplication.
Answer:
C) the absence of scales on its surface
Explanation:
Snakes bodies are covered with scales. The scales are waterproof and helps for griping on rough branches and movement
Answer:
A. Mutations change the nucleotide sequence of the gene, resulting in a different arrangement of amino acids.
Explanation:
Mutations alter the sequence of nucleotides in a molecule of DNA. DNA is used to create mRNA, which is used to create a chain of amino acids that make a protein. If the mutation changes the sequence of DNA, then the sequence of amino acids and the final protein will be different.
This can affect its structure and function. If the protein is a cell surface protein, and its structure is significantly altered, antibodies may no longer recognise and bind to the protein.
