Assessment v I communication v I Content I ePortfolio I Re BIOL1020 Final Exam Q
ID: 175317 • Letter: A
Question
Assessment v I communication v I Content I ePortfolio I Re BIOL1020 Final Exam Quiz me Left: 1:59:26 Antonio Worles: Attempt 1 Question 1 (1 point) What are alleles? C A) recessive forms of a kind of characteristic carried by genes O B) alternative forms of a gene for a single trait, such as blue eyes or brown eyes O c) genes for different traits, such as hair color and eye color D) the locations of genes on a chromosome E) dominant forms of a kind of characteristic carried by genes Question 2 (1 point) Which of the following is the best description of Multiple sclerosis (Ms)? 19 20 A) synaptic uptake of dopamine is inhibited B) gradual death of brain cells due to calcium influx C) degeneration of dopamine-releasing neurons in the brain signals from the motor cortex E) myelin sheath lesions impair normal coordination of impulses 917 lock F6Explanation / Answer
1.The correct answer is : B) Alternate forms of a gene for a single trait,such as blue eyes or brown eyes.
Reason:Allele refers to alternate forms of a gene that is located on a specific chromosome at a specific location.
2.The correct answer is :E) myelin sheath lesions impair normal coordination of impulses.
Reason: Multiple sclerosis is a demyelinating diseases that damages the myelin sheath of the neurons causing lesions in the myelin sheath as result of which impulses cannot be conducted in the nerves that are affected.
4.The correct answer is: C) Uracil
Reason: Thymine is replaced by uracil in RNA.
5.The correct answer is :C) interstitial cells.
Reason: Interstitial cells secrete the hormone testosterone in males.