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You are studying two linked genes in lizards. You have two females and you know that both are the same genotype, heterozygous for both genes (Aa and Bb). You testcross each female to a male that is fully homozygous recessive for both genes (aa and bb) and get the following progeny with the following phenotypes:                                              Female 1     Female 2                                               AB – 3          AB – 50                                               ab – 3           ab – 49                                               Ab – 45         Ab – 5                                               aB – 52         aB –3 How can you explain the drastic difference between these two crosses?

A mother with the genotype AaBbcc and a father with the genotype aaBbcc plan to have kids.  If each of these loci sort independently and follow typical patterns of Mendelian inheritance, what percentage of the offspring with have the same genotype as the mother?  Enter your answer as a percentage and round your answer to the nearest whole number. 

How does an XX female inherit her two sex chromosomes

Dr.Gantar is studying leopard gecko coloration.  She found three genes that appear to determine some coloration and are linked.  Based on the data below, the middle gene is .  st = stripes y = yellow patches sp = spots F1 Testcross Progeny Phenotype Number spotted (+ + sp) 613 striped, yellow (st y +) 611 yellow (+ y +) 231 striped, spotted (st + sp) 217 striped (st + +) 131 yellow, spotted (+ y sp) 125 striped, yellow, spotted (st y sp) 6 wildtype (+ + +) 7 Total 1941

What are three differences between DNA and RNA? Choose ALL that apply.

Which of the following will NOT dissolve in water? 

Which one of the following statements about the election infrastructure ecosystem is true?

The tympanic membrane has three layers of tissue, including a fibrous middle layer.

The lever action of the ossicles contributes approximately ______ of gain.