The image represents a pair of replicated chromosomes that are about to under meiosis and produce gametes for sexual reproduction. during meiosis, a process called crossing over can occur. during crossing over, a section of like chromosomes exchanges segments. this promotes genetic variation in life forms. imagine that meiosis proceeds and gametes are produced. based on the laws of inheritance, what is the probability that a gamete will end up with a mutated chromosome to be passed on to offspring? a) 4% b) 25% c) 50% d) 100%

Describe two recent or ongoing space missions.

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.

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what