6. which of these best describes our current understanding about how species evolve over time? a) as organisms use certain traits more frequently, each organism evolves over time. b) populations of organisms evolve rapidly due to genetic changes brought about by random mating patterns. c) traits that result in a greater number of mutations occur more frequently, causing the population to evolve. d) populations evolve as natural selection results in a change in the frequency of alleles within the population over time. 7) a change in a sequence of dna bases in a bacterial cell has resulted in a mutation. this mutation has increased the ability of the bacteria to break down and digest organic molecules in the environment. bacteria with this mutation are better able to find and utilize food sources. according to the theory of natural selection, what is most likely to occur in future generations of this bacteria? a) the relative frequency of the mutation will increase as time passes. b) because the mutation has changed the dna of the bacteria, a new species will be formed. c) because the mutation is abnormal, the mutation will become more rare with every passing generation. d) bacteria with the mutation will increase in number until the food supply is exhausted, causing the bacteria to become extinct.

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

All ova contain sex chromosomes corresponding to: x y xx xy

Will mark brainliest! 1.) jan’s sister and mother have both had breast cancer. she is wondering if she should undergo genetic testing to check for a mutation of the brca1 gene. a mutation in the brca1 gene is commonly associated with, but not guaranteed to cause, breast cancer. the presence of a mutation increases a patient’s chances of getting breast cancer to about 85 percent, compared to a 13 percent risk in the general population. costs may vary, but most labs charge patients or their insurance companies less than $3,000 to sequence the brca1 to look for mutations. do you think that jan should undergo genetic sequencing? explain your answer. (2 points) what are potential pros and cons of having such tests done? (5 points) describe how the availability of genetic sequencing can affect the frequency of genetic diseases in individuals and populations. (3 points) 2.) scientists have developed genetically engineered plants that are pest-resistant. by adding genes to the plant’s dna, they become toxic to insects (but not to plants or animals). this means that these plants may not need to be sprayed with pesticides to ward off the insects. would you be willing to eat these genetically altered crops? explain your answer. (5 points) what are some possible impacts (positive or negative) of this genetically engineered plant on the environment, society, and individuals? (5 points)