+0 pts /1300 Resources < Question 1 of 13 > Which of the statements are accurate about cell determination in animals? all cells become irreversibly committed to specific fates cells lose totipotency chromosomal rearrangements are usually involved regulation of transcription can be involved Question Source: Pierce 6e - Genetics: A Conc MacBook Pro
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Let's analyze each statement: 1. **"all cells become irreversibly committed to specific fates"**: This statement is generally false. While many cells become committed to specific fates during development, not *all* cells become *irreversibly* committed. For Show more…
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Normal embryonic development involves mechanisms that progressively narrow and differentiate the potential fates of different cells, from the totipotent state of the zygote, to terminally differentiated cells and tissues. Which of the following processes contribute to cell fate determination and differentiation? - select all correct answers. (There is partial negative scoring for incorrect answers.) Transport of specific mRNAs in an unfertilized oocyte. Modification of amino acids in histone N-terminal tails. Segregation of regulatory molecules into one daughter cell at mitosis. Modification of amino acids on the nucleosome core. X chromosome inactivation. Transposition of mobile genetic elements. Deletion of unexpressed genes. Methylation of specific CpG dinucleotides. Segregation of chromosome homologs into different daughter cells at mitosis Deamination of methylated cytosines to form thymine.
Derrick D.
Normal embryonic development involves mechanisms that progressively narrow and differentiate the potential fates of different cells, from the totipotent state of the zygote, to terminally differentiated cells and tissues. Which of the following processes contribute to cell fate determination and differentiation? - select all correct answers. (There is partial negative scoring for incorrect answers.) Methylation of specific CpG dinucleotides. Deamination of methylated cytosines to form thymine. X chromosome inactivation. Transposition of mobile genetic elements. Modification of amino acids on the nucleosome core. Segregation of chromosome homologs into different daughter cells at mitosis Deletion of unexpressed genes. Transport of specific mRNAs in an unfertilized oocyte. Segregation of regulatory molecules into one daughter cell at mitosis. Modification of amino acids in histone N-terminal tails.
Josee P.
Commitment of cells in an embryo to making particular types of tissues Cells in an embryo must commit to making particular types of tissues. For each of the following statements, i from the list. chromosome number activation more determined shape size cytoplasmic determinant specification change i shape its nucleus its mother cell-cell interaction less be grown in isolation gene expression uncommitted induction If cells from one part of an embryo are transplanted to another part, and they develop into the tissue they would have made originally, the cells are said to be ________. In general, cells from early stage embryos are able to make ________ cell types compared with cells from later stage embryos. The reason why different cells turn into different tissues is because of differences in ________. With cytoplasmic determinants, a cell will become committed to a particular future because it has inherited a particular mRNA or protein from ________. A cell in an embryo will produce intestinal cells later in development. When that cell is removed and grown separated from the embryo, it produces muscles instead. This means that in order to make intestinal cells, a/an ________ is necessary. A cell-cell interaction that changes the gene expression is called a/an ________.
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