Homologous pairs, Eg. X and Y
One pair in paternal and the other in maternal, obtained during Meiosis.
<span>LD
means lethal dose. LD50 is the amount of a material, administered at once to
cause the death of half (50%) of a group of test organisms. A test which shows that LD50 of a certain
chemical is 20 mg per kg means that 20 milligrams of that chemical for every 1
kilogram body weight of the test animal when administered in one dose, causes
the death of 50% of the test group.</span>
<h2>Answer:</h2>
The mistake made by Tyra is identified as personal error.
<h3>Explanation:</h3>
When an experiment is performed, the results which came in the final step or after interpreting experiment results are not 100% correct results.
Because there are many types of errors which can influence an experiment result like an instrumental error, personal error/human error.
The personal error is the error in measuring results or interpreting the results by the scientist due to some reasons like attention deviation or inability to take accurate measuring.
There is a backup system that your body uses to create ATP, and it is called Anaerobic Respiration.
