Answer:
1. chromosome: tight coils of DNA
2. Eukaryote: a cell that has a membrane-bound nucleus
3. Gene: a specific sequence of DNA nucleotides that carry hereditary traits
4. Prokaryote: a cell whose nucleus is not bound by a membrane
5. Trait: genetic characteristic of an individual
Explanation:
Chromosomes are the thread-like structures that appear during cell division. Each chromosome is made up of DNA tightly coiled with its packing proteins.
A cell is defined as eukaryote or prokaryote on the basis of the presence of a membrane-bound nucleus. The cells that lack the membrane-bound nucleus and other membrane-bound organelles are called prokaryotic cells. Example: bacteria.
The cells that have a membrane bound nucleus in which DNA is present are called eukaryotic cells. Example: Plant cells.
A stretch of DNA that code for a particular protein and thereby regulate specific genetic trait is called a gene. Genes are present on chromosomes and are carried from one generation to next to maintain the genetic traits.
The features of living beings regulated by the gene are called trait. Example: skin color, eye color, etc.
Answer:
Prophase is the first phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.
Metaphase is a stage in the cell cycle where all the genetic material is condensing into chromosomes.
Anaphase is the stage of mitosis and meiosis in which the chromosomes move toward the poles of the spindle.
Telophase is the final stage of mitosis and of the second division of meiosis in which the spindle disappears and the nucleus reforms around each set of chromosomes.
Cytokinesis is the division of cells after either mitosis or meiosis I and II.
Explanation:
<h2>
<em>Answer:</em></h2>
<em>Option</em><em> </em><em>C</em>
<em>Latitude </em><em>lines </em><em>meet </em><em>at </em><em>the </em><em>poles.</em>
<em>Explanation</em><em>:</em>
<em>Several </em><em>equivalent</em><em> </em><em>projections </em><em>were </em><em>developed </em><em>in </em><em>an </em><em>attempt </em><em>to </em><em>minimize </em><em>the </em><em>distortion </em><em>of </em><em>countries </em><em>and </em><em>continents</em><em> </em><em>of </em><em>planet </em><em>Earth,</em><em>keeping </em><em>the </em><em>area </em><em>constant.</em>
<em>hope </em><em>it</em><em> </em><em>helps</em>
Answer: function in the synthesis of proteins
Explanation:
Ribonucleic acid or RNA is a kind of essential nucleic acid present in the cells of the living beings. The main function of the RNA is to carry the information present in the coded form in amino acid sequence obtain from the genes to produce protein molecules. The amino acid sequence gets assembled on the ribosome brought about by the messenger RNA (mRNA) each amino acid sequence encodes for a typical protein molecule. A single strand of DNA acts as a blueprint for the synthesis of mRNA which is transcribed from the strand of DNA.
Yes. Oxygen crash led to Cambrian mass extinction
