University:
California State University, Northridge
Course:
BIOL 468 | Human Genetics
Academic year:

2022
Views:

499

Pages:

2
Author:

Charlee Buchanan

Which of the following is a mechanism to imprint genes? The gene b1 codes for a transcription factor that regulates the synthesis of anthocyanin. In some cases, a paramutagenic allele may be very stable, meaning that it remains paramutagenic every time it is passed from parent to oﬀspring via meiosis. During embryonic development, cells destined to become muscle cells have other genes that are inhibited by epigenetic changes such as DNA methylation so those genes are not expressed in these cells. An epigenetic change involves a permanent change to a DNA sequence. You are studying a winter-annual Arabidopsis plants. You identify a strain with a mutation in the FLC gene that renders it inactive. When do you expect this plant to ﬂower? Select the functional roles of heterochromatin. Check all that apply. You are studying a chromosome in a new animal species. The presence of what element would make you most conﬁdent that a region is facultative heterochromatin and not constitutive heterochromatin? During interphase, a eukaryotic chromosome is primarily composed of __________. If HP1 was mutated such that it could still bind H3K9me but could not bind chromatin-modifying enzymes or chromatin-remodeling complexes, what would be the result? The heterochromatin in the cell would still be compacted but additional changes in heterochromatin structure would not occur. Roberts syndrome is caused by loss-of-function mutations in the Esco2 gene. This gene encodes an acetyltransferase. If you examined the chromatin in cells from a patient with Roberts syndrome, what would you expect to ﬁnd? Maize with a paramutagenic allele of the p1 gene (here called p1' ) have light ﬂoral bracts. Maize with the paramutable p1 allele have red ﬂoral bracts. If you cross maize that are homozygous for the paramutagenic allele with those that are homozygous for the paramutable allele, what will be the phenotype of the progeny? Assume that the p1' allele is very stable and very paramutagenic.

Molecular Genetics Cellular Development and Inheritance

Related Documents

Recommended Documents

Description

Related Documents

Almost There!

Free up your schedule!

Take 5 seconds to unlock