What is the blending theory of inheritance? How did Mendel disprove this theory?
What will be an ideal response?
The blending theory of inheritance stated that an individual's genetic makeup is intermediate of that of the parents. In one of his experiments that disproved the theory, Mendel used true-breeding pea plants and performed reciprocal crosses: pollen from tall plants with eggs from short plants was one cross and pollen from short plants crossed with eggs from tall plants was another cross. All offspring (F1 generation) were tall and resembled one parent. This did not support the blending theory, which suggests that all offspring would have been of an intermediate height.
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The function of carbonic anhydrase is to increase the rate ____
a. of conversion of CO2 and H2O into HCO3? and H+ b. of conversion of HCO3? and H+ into CO2 and H2O c. at which CO2 binds to hemoglobin d. at which O2 binds to hemoglobin e. of conversion of HCO3? and H+ into CO2 and H2O, and the rate at which CO2 binds to hemoglobin
Which body tissue contains structures that are responsible for producing sweat?
A. epithelial B. connective C. muscle D. nervous E. endocrine
The law of independent assortment would predict that the F2 progeny of F1 heterozygous plants will exhibit a __________
A) 3:1 phenotypic ratio B) 9:3:3:1 phenotypic ratio C) 1:2:1 genotypic ratio D) 9:3:3:1 phenotypic ratio and 1:2:1 genotypic ratio E) 3:1 phenotypic ratio and 1:2:1 genotypic ratio
During swallowing, ____ closes off the ____ so food cannot enter the lower airway
a. the pleural membrane; trachea b. cartilage; larynx c. the pharynx; esophagus d. the Adam's apple; trachea e. the epiglottis; larynx