Agroup of scientists is studying memory in mice. they feed sodium butyrate, a histone deacetylase inhibitor, to a group of older mice and then subject them to memory exercises. how do you predict the memory of treated mice might compare with the memory of untreated mice? histone acetylation increases with age, so sodium butyrate may improve memory in older mice. histone acetylation increases with age, so sodium butyrate may impair memory in older mice. histone acetylation decreases with age, so sodium butyrate may improve memory in older mice. histone acetylation decreases with age, so sodium butyrate may impair memory in older mice. histone acetylation is not associated with memory in mice.

Study the image of this rock. which characteristic best supports its formation from sedimentary processes? it has many layers. it is coarse-grained. its grain shape is round. its texture is non-banded.

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening

Give examples of selective advantage of organism’s body part/organ