Created by StemPy LabIn snapdragon (Antirrhinum sp.), a true-breeding red-flowered plant (RR) crossed with a true-breeding white-flowered plant (rr) gives pink-flowered F1 plants. A pink-flowered plant is now crossed with a white-flowered plant. What are the expected offspring?
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← During translation, a ribosome joins amino acids into a polypeptide in the order set by the codons of an mRNA. Which statement about the ribosome in this process is correct?Mendel published his work in 1865, but it remained unrecognised till 1900. Read the following statements about the reasons.
(i) Communication was not easy in those days, so his work could not be widely publicised.
(ii) His idea of factors as stable and discrete units that did not blend was not accepted as an explanation for the apparently continuous variation seen in nature.
(iii) His use of mathematics to explain biological phenomena was new and unacceptable to many biologists of his time.
(iv) He could not provide any physical proof for the existence of factors, or say what they were made of.
(v) He worked with pea varieties that were not true-breeding, so others could not repeat his results.
(vi) He studied too few plants for his results to be trusted.
How many of the statements above are correct? →
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