1. nucleic acids
2. proteins
3. carbohydrates
4. lipids
Nucleosus is the correct answer to the question
If, while examining a human karyotype, it is observed that there are 22 paired chromosomes and two chromosomes that are not the same size, this would most likely be due to mutation.
<h3>What is mutation?</h3>
Mutation is any change in the nucleotide or chromosomal sequence of a genome.
There are different types of mutation and they include;
- Deletion mutation
- Translocation mutation
- Insertion mutation
According to this question, a human karyotype was observed to have 22 paired chromosomes and two chromosomes that are not the same size.
This observation is likely caused by a mutation that caused the pairing of unequal sized chromosomes.
Learn more about mutation at: brainly.com/question/17106056
Oncogenes are most like the gas pedal on a car, while tumor suppressor genes are most like the brakes on a car. Oncogenes and tumor suppressor genes are mutated in cancer cells.
Oncogenes are genes overexpressed in cells in which they should not be expressed, thereby leading to cancer.
Some examples of oncogenes are growth factors such as, for example, the Platelet-derived growth factor (PDGF) or Epidermal growth factor (EGF).
Conversely, tumor suppressor genes are genes that act to regulate cell division and replication, thereby their inactivation also leads to cancer.
A well-known example of a tumor suppressor gene is the p53 gene that acts to control cell division and apoptosis (programmed cell death).
Learn more in:
brainly.com/question/14662375
Humus is the passive fraction of soil organic matter. :)
The organic matter in humus is made of soil.
