Answer:
An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outer region of the atom, which holds its electrons in orbit around the nucleus.
Explanation:
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Answer:
allows the recombination of genetic information
Explanation:
Crossing over is a process that occurs only in meiotic division in sexually reproducing organisms. It is the process whereby the segments of a gene are exchanged between the non-sister chromatids of homologous chromosomes.
Due to this crossing over process that occurs in prophase I of meiosis, the alleles of a chromosomes are recombined to ensure genetic diversity. Hence, according to this question, crossing over results in additional genetic variation during meiosis because it allows the recombination of genetic information.
Answer:
Genetic engineering is accomplished in three basic steps. These are (1.) The isolation of DNA fragments from a donor organism; (2.) The insertion of an isolated donor DNA fragment into a vector genome and (3.) The growth of a recombinant vector in an appropriate host.
Answer;
- Hydrogen peroxide
Explanation;
-Enzyme catalase is a protein enzyme present in most aerobic cells in animal tissues. Catalase is present in all body organs being especially concentrated in the liver & erythrocytes. The brain, heart, skeletal muscle contains only low amounts.
The substrate for the enzyme catalase is hydrogen peroxide. It catalyzes the decomposition of hydrogen peroxide to water and oxygen.
2H2O2 = 2H2O + O2
