Problem: A population of 50 birds contains 16 animals with red tail feathers and 34 animals with blue tail feathers. Blue tail feathers are dominant trait. Set B for dominant (blue tail feathers) allele and b for recessive (red tail feathers) allele. What is the frequency of the red allele? 0. What is the frequency of the blue allele? 0. What is the frequency of heterozygote? 0. What is the frequency of the birds homozygous for the blue allele? 0. What is the frequency of the birds homozygous for the red allele? 0.

QUESTION 2 Within a few weeks of treatment for herpes virus with the drug isonazide, a patient's herpes virus population consists entirely of isonazide-resistant viruses. How can this result best be explained? O A. The drug caused the HIV RNA genome to change O B. The isonazide drug spontaeously converted to a form ineffective against the virus. O C HIV began making drug-resistant versions of reverse transcriptase (a viral enzyme) in response to the drug O D. None of the above

Standard 7a Rodents can make vocalizations that humans can hear, such as a squeal. But they also can communicate during social interactions using ultrasonic vocalizations - vocalizations at a frequency higher than the human ear is capable of hearing. Sex differences in vocal communication, similar to observations in songbirds, are observed In rats, with adult male rats eliciting a typical type of ultrasonic vocalizations not observed in females. As noted elsewhere in this Problem Set, FOXP2 is involved in the development and neural control of vocalizations in a broad spectrum of species, including rodents. In humans it is linked to human speech and language disorders. In rats, FOXP2 has been related to sex-specific vocalizations, like the male-typical ultrasonic vocalizations. FOXP2 expression in neurons in the brain is greater in males than females. Further, recent research demonstrated that FOXP2 is a target of activated androgen receptors (Le specialize receptors that bind androgens…

Question 3. Biochemistry techniques have been used for the analysis on biomolecules such as enzymes, DNA, antibodies and other molecules in biomedical engineering. b) ELISA is a plate-based assay technique, designed for detecting and quantifying substances such as peptides, proteins, antibodies and hormones. Examine two principles of ELISA. c) Gel electrophoresis is a laboratory technique, used to separate the mixture of macro- molecules such as DNA, RNA and proteins according to their molecular size. i. Analyze the characteristics of DNA molecule that affect the separation results in the gel electrophoresis. ii. Examine three common factors that are possibly affect the performance of gel electrophoresis.