All the F1 offspring of a cross between a red-flowered plant and a white-flowere

Question

All the F1 offspring of a cross between a red-flowered plant and a white-flowered plant have pink flowers; this is known as: a. Dominance b. Predominance c. Full dominance d. Complete dominance c. Incomplete dominance Recombinants are: a. Offspring with non-parental phenotypes b. Offspring with recessive phenotypes c. Offspring with linked phenotypes d. Offspring with dominant phenotypes e. Offspring with parental phenotypes The class of RNAs that regulate gene expression are called: a. tRNAs b. mRNAs c. tRNAs d. mRNAs e. snoRNAs Telomcrase: a. Keeps the ends of chromosomes from shortening during replication. b. Is absent in most somatic cells. c. Is active in most cancer cells. d. All of the above. e. None of the above. If cell "W" enters meiosis, and nondisjunction or one chromosome occurs in one or in daughter cells during meiosis II, what will be the result at the completion of meiosis? a. All the gametes descended from cell "W" will be diploid. b. 1/4 of the gametes descended from cell "W" will be n + 1, 1/4 will be n = 1, and 1/2 will be n. c. Half of the gametes descended from cell "W" will be n + 1, and half will be n = 1. d. Two of the four gametes descended from cell "W" will be haploid. and two will be diploid. e. All the gametes descended from cell "W" will be haploid. The following steps occur during protein synthesis. a. First peptide bond forms b. Large ribosomal submit binds to mRNA c. Initiator tRNA/small ribosomal subunit complex binds to mRNA d. aminoacyl-tRNA binds to mRNA e. Initiator tRNA binds to large ribosomal subunit

Explanation / Answer

24. Ans .e. Incomplete dominance

Here the F1 cross yielded a new phenotype(pink flowers), different from parental phenotypes (white & red),

25. a. Offspring with nonparental phenotypes.

For example pairing of the homologous chromosome in the eukaryotic organism during meiosis is a recombination process.

26. e. sncRNAs

Small non-coding RNA act by activating/inhibiting translation.

27. d. all of the above.

Telomerase is a reverse transcriptase enzyme which helps in the elongation of telomeres.

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