Exercise 6 question sheet: Table 2: Karyotype 1 Data Letter Number of chromosomes Gender Is the karyotype normal? Disorder (if applicable) Table 3: Karyotype 2 Data Letter Number of chromosomes Gender Is the karyotype normal? Disorder (if applicable) Exercise 6 questions: 1. What is the centromere position for chromosomes 1, 9, and 14? 2. If an individual has a trisomy of chromosome 18, how many chromosomes total does the person have? 3. If an individual has a monosomy of chromosome 12, how many chromosomes total does the person have? 4. If a human gamete (egg or sperm) with one extra chromosome participates in fertilization with a normal human gamete, what will be the result? How many chromosomes will the resulting zygote have? 5. If a human gamete that is missing a chromosome participates in fertilization with a normal human gamete, what will be the result? How many chromosomes will the resulting zygote have? 6. Down syndrome was the first chromosomal disorder of humans to be identified. Look online to find out who this disorder was named after, and what year it was discovered.

In 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? in 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. these bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.