In a controlled cross for a quantitative trait, 600 F2 offspring are obtained, 10 of which exhibit the phenotype of one of the parentals. How many genes are estimated to control this trait based on these results?
What will be an ideal response?
1/(4n) gives the fraction of F2 offspring resembling either parental for a polygenic trait in which n is the number of genes involved. 10/600 is approximately , corresponding with a value of n = 3 genes.
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Activation of the ________ G-protein results in the formation of focal adhesions and stress fibers.
Fill in the blank(s) with the appropriate word(s).
Do all of the nucleotides contain a different nitrogenous base?
a. yes b. no
The first step in the initiation of protein synthesis is the binding of _______ to the _______.
a. initiation factors; initiation codon b. initiation factors; small ribosomal subunit c. the small ribosomal subunit; initiation codon d. the initiator tRNA; initiation codon
What is the term that describes the complex of DNA and proteins that makes up a eukaryotic chromosome?
a. centriole b. centrosome c. chromatin d. centromere