Calculate the coefficient of relatedness for the following relationships in a haplodiploid hymenopteran spe-cies: Sister to full sisters Sister to brother Brother to sister
What will be an ideal response?
ANS:
Sister to full sister: 0.5 x 0.5 (prob. of sharing same allele from mom) + 0.5 (probability sharing same allele from dad) = 0.75;
Sister to brother: 0.5 x 0.5 (prob. of sharing same allele from mom) + 0 (probability sharing same allele from dad) = 0.25;
Brother to sister: 0.5 (prob. of sharing same allele from mom)
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a. by active and passive transport between the basal lamina and the interstitial fluid b. by active and passive transport between the basal lamina and the plasma c. by active and passive transport between the intracellular fluid and the interstitial fluid d. by active and passive transport between the intracellular fluid and the plasma e. through gap junctions between the intracellular fluid and the plasma
In obesity studies in mice, the binding of leptin activates the leptin receptor and initiates changes in ____ in the
hypothalamus. a. nucleotide sequences b. cell membranes c. mitochondria d. fat storage e. gene expression
Which of the following types of RNA is typically found as a strand that is about 75 to 90 bases long and folds into a structure with four double-helical segments?
a. tRNA b. snRNA c. pre-mRNA d. rRNA
Which of the main taste types for which we have receptors is important for detecting possible toxic substances?
A. salty B. sweet C. sour D. bitter E. salty and sweet