A dog trainer gives a dog a treat every third time the dog sits after the trainer says "sit." What BEST describes the schedule of reinforcement under which the trainer is controlling the dog's behavior? a. Fixed ratio b. Variable interval c. Variable ratio d. Fixed interval

First problem: for each of the following sequences, fill in the mrna sequence, the amino acid sequences, and the rrna anticodonsthat have been left blank.a) dna: atácga aatcgcgatcgcggcgattoggb) mrna: ? c)codon: ? d)anticodon: ? e)amino acids: ? second problem: see abovea) dna: titaoggccatgaggga a tagtig gillarib)mrna: ? c) codon: ? d)anticodon: ? e) amino acids: ? third problem: see abovea) dna: tacgggcctat acgctactactca tgsatcggb) mrna: ? c)codon: ? d)anticodon: ? e)amino acids: ?

Dna is always read in the whereas rna is read in .

Why do you think the puppy litter was all dark-haired?