The ultimate source of new alleles and genetic variability is ____________________. Fill in the blank(s) with the appropriate word(s)


ANS: mutation

Biology & Microbiology

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Which groups of commercially grown plants are produced by tissue culture propagation?

a. Pine trees b. Orchid c. Grape vines d. Grasses e. Rose bushes

Biology & Microbiology

You are interested in designing a molecular probe to detect the region of ?S SNP, which includes a DdeI (CTNAG) restriction site. Which of the following molecular probe sequences would anneal to the correct position?

A) ACTCCTGAGGAGAAG B) TGAGGACTCCTCTTC C) GTGCACCTGACTCCT D) CACGTGGACTGAGGA E) CACGUGGACUGAGGA

Biology & Microbiology

During PCR, heating of DNA is required to

A) promote attachment of nucleotides to the template. B) allow DNA ligases to bind fragments together. C) unwind double-stranded DNA. D) attach the primer to the template DNA. E) attach a stop codon.

Biology & Microbiology

Which of the following is NOT a characteristic of plant cells?

A. Plasmodesmata are present. B. Plastids are present. C. Centrioles are present during mitosis. D. Cell wall is present.

Biology & Microbiology