Answer:D Hookworm
Explanation:
Hookworm enters the skin and then enters the blood stream and affects the lungs.
Answer:
If an atom has an equal number of protons and electrons, its net charge is 0. If it gains an extra electron, it becomes negatively charged and is known as an anion. If it loses an electron, it becomes positively charged and is known as a cation.
Explanation:
Surface tension allows light insects to walk on water.
Answer:
<h2>G-A mutation is a point mutation in which one nucleotide is replaced by another nucleotide, it is an example of Transition mutation (a base substitutions that changes a purine nucleotide to another purine.</h2>
Explanation:
1. Defective Mitochondrial Gene Expression Results in Reactive Oxygen Species (ROS).
2. Elevated production of reactive oxygen species (ROS), and increased oxidative stress, results in defects in proper functioning of cell by causing mutation in the DNA and mitochondrial genes.
3. If the mutation is silent mutation, then there is no harm or less harm in the cell, if the mutation is missense or nonsense type then it can affect the functioning of the cell and phenotype of that organism.
4. If their is mutation in mitochondrial tRNA gene, it can affect the translation of mitochondrial mRNA and gene expression.
Answer:
Mutations and gene recombination
Explanation:
Mutations are changes in DNA sequence that can create genetic variation within the population and thus are the ultimate source of new alleles . Mutations are important for evolution because of their ability to form a new genetic variant (allele) that can be spread to the offspring. If a new variant of a trait formed by a mutation is advantageous and helps the organism to survive and reproduce, it is going to be favourable by natural selection. That variation will more likely be passed to the next generation and remain over time.
Genetic recombination is a process that occurs during meiosis between homologous chromosomes and it involves exchange of genetic material between them. As a result, offspring inherits reshuffled alleles different than their parents.
Another sources of genetic variation are random mating and random fertilization.
