This pedigree shows the inheritance of Tay-Sachs in a family. Tay-Sachs is a recessive disorder that causes cells to be unable to break down waste products. These wastes build up in brain cells and cause damage and eventual death. Which numbers have the genotypes of tt? TT = normal Tt = carrier tt = disease a 1, 2, 3, 4, 6, 7, 8, 9, 12, & 13 b 5, 10, 11, & 14 c 5, 6, 7, 8, & 9 d 10, 11, 12, 13, & 14

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this