Answer:
C. Prohase 1
Explanation:
It is during prophase 1 of meiosis that crossing over occurs before tetrads or homologues pair of chromosomes are alligned across the equator of metaphase 1. In Meiosis 11, only the sister chromatics will be left or remain and the homologues pair of chromosomes would be moved to separate cells.
Answer: Option b
Explanation:In chemistry,
before any reaction would occurs, reactat must be able to overcome some certain amount of energy which is called the activation. The activation energy is usually the heat that is suppled.it is also refered to as the minimum energy needed before any reaction can take place. For reaction to take place, there must be an equilibrium( at constant temperature and pressure.
Answer: true
Explanation: In gel electrophoresis, the smaller the size/molecular weight of DNA the faster it moves across the gel and vise versa. This is as a result of the pore size of the gel which is usually prepared 1g of agarose in 100ml of distilled water. So a DNA fragment with 1000 base pairs will "struggle" its movement across the gel pore making it mive less faster and further. Movement and molecular weight of DNA are inversely proportional.
Answer:
Answer:
New York City: 50 Years ago: 625 ppm Present Day: 893 ppm Future Development Impact: 843 ppm. Recommendation: Stop littering in water, to help keep it clean.
Amazon Rain forest CO2: 50 Years ago: 318 ppm Present Day: 402 ppm Future development impact: 338 ppm Recommendation: Avoid human interaction so nature can take its course.
Sahara Desert Loss Of Land: 50 Years ago: 1.2 Meters Present Day: 3.5 Meters Future development impact: 2.4 Meters Recommendation: Using better farming practices by rotating crop locations can help with soil erosion.
Explanation:
I changed the wording so it cant be traced, but some websites had the answer key.
