1. Which diagram most accurately shows the arrangement of homologous chromosomes during the first metaphase of meiosis? Please explain why and how does this arrangement determine the law of “equal segregation”? 2. Which diagram most accurately shows the arrangement of homologous chromosomes during the first metaphase of mitosis? Please explain […]

Q1. The oldest rocks on Earth date from about 4.2 billion years ago. What does this propose about the interval between 4.6 billion years ago, while the Earth started to form, and 4.2 billion years ago? Q2. You also measure that half-life of the Winease catalyzed conversion is 10 sec. […]

Case study jack and Diane R., a 25-year-old newlywed couple, reported to the emergency room with abdominal pain and diarrhea of 4 days’ duration. They stated that they initially thought they “picked up a summer stomach flu” because they recently returned from a 5-day camping trip. Jack added, “We were […]

You just bought two black guinea pigs from the pet store that are known to be heterozygous (Bb). You also know that black fur (BB) is dominant over white fur (bb), and that a lethal recessive allele is located only one cM away from the recessive b allele. You decide […]