In Drosophila, assume that the gene for scute bristles (s) is located at map position 0.0 and that the gene for ruby eyes (r) is at position 15.0. Both genes are located on the X chromosome and are recessive to their wild-type alleles. A cross is made
between scute-bristled females and ruby-eyed males. Phenotypically wild-type F1 females were then mated to homozygous double mutant males, and 1000 offspring were produced. Give the frequency of scute expected.
A) 360 B) 425 C) 75 D) 500 E) 250
Answer: B
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Parietal cells of the gastric glands in the stomach produce
A. chyme. B. gastrin. C. pepsinogen. D. HCl (hydrochloric acid).
In response to induction by the optic vesicle,
a. genes coding for crystallin and keratin are activated. b. genes coding for only crystallin are activated. c. genes coding for only keratin are activated. d. genes coding for crystalline and keratin are not activated. e. apoptosis occurs.
The (bacilli/Lactobacilli/bacteroids) are a group of Gram-negative bacteria that include obligate anaerobes normally found in the intestinal tracts of animals and humans
What will be an ideal response?
Determining the average propensity of customers to purchase a warranty plan, if the plan is under a promotional offer during the time of product purchase, would be an example of what type of information?
A. Passive prediction B. Indirect causal effect C. Lead information D. Lag information