Answer:
c. Crossing over
Explanation:
In meiosis, crossing over refers to the process where<u> homologous chromosomes 'combine' with each other in order to exchange genetic material</u>, which results in genetic variation. This process takes place during Prophase I of the <u>first meiotic division</u>.
Crossing over is extremely important for the variation - and survival - of a species, as it results in numerous genetic combinations that are passed from generation to generation.
The sun is Gaseous, and has three layers
Answer:
Varicose veins are twisted, enlarged veins. Any superficial vein may become varicosed, but the veins most commonly affected are those in your legs. That's because standing and walking upright increases the pressure in the veins of your lower body.
Explanation:
When a gene mutation occurs, the nucleotides are in the wrong order which means the coded instructions are wrong and faulty proteins are made or control switches are changed. The body can't function as it should. Mutations can be inherited from one or both parents. They are present in the egg and/ or sperm cells.
Answer: B
Explanation:
Must be measurable so you know if you’re getting the same result at the end of the day while using same measurements.