Homework Answers
TRUE
Barr body is discovered by Murray Barr. It is an inactive X chromosome. In humans, females have 2 X-chromosomes and males have a single X-chromosome. So in human female one of the two X chromosomes is inactivated and it can be observed as darkly stained spot due to heterochromatinization. Since human male have a single X-chromosome and a Y-chromosome, there is no need of X-chromosome inactivation in males. Barr bodies are thus required to regulate and balance the amount of transcribed X-linked gene products in males and females.
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A human cell with a Barr body always comes from a female. True or False True...
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A female sex cell has six Barr bodies. How many X chromosomes are there in this cell?
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True or False: Sex chromosomes in mammals Indicate whether each of the following statements about sex...
True or False:
Sex chromosomes in mammals Indicate whether each of the following statements about sex chromosomes in mammals is true or false. 01. Dosage compensation involves inactivation of the Y chromosome in males in order to equalize gene expression between the sexes.(Click to select) 02. One of the X chromosomes in each cell of a female is inactivated early in embryonic development, before the embryo's sex is determined. (Click to select) 03. In a female, the same X chromosome...
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True/False: v) True/False: Pressure always acts normal to a surface. vi) True /False: The fluid velocity is always tangent to a streamline. vii) True / False: Turbulent flows are not affected by surface roughness.
Determine whether each of the following is TRUE (i.e. always true) or FALSE (i.e. not always true...
Determine whether each of the following is TRUE (i.e. always true) or FALSE (i.e. not always true) Justify your answers! (c) 2n-1(222) (a) 2n2 + n-1-0(2n2 +n). (b) 2n2 + n-1-0(2n2 + 2n).
Determine whether each of the following is TRUE (i.e. always true) or FALSE (i.e. not always true) Justify your answers! (c) 2n-1(222) (a) 2n2 + n-1-0(2n2 +n). (b) 2n2 + n-1-0(2n2 + 2n).
Answer True or False for all statements. True/False A concave mirror always forms a virtual image of...
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True or False:
Sex chromosomes in mammals Indicate whether each of the following statements about sex chromosomes in mammals is true or false. 01. Dosage compensation involves inactivation of the Y chromosome in males in order to equalize gene expression between the sexes.(Click to select) 02. One of the X chromosomes in each cell of a female is inactivated early in embryonic development, before the embryo's sex is determined. (Click to select) 03. In a female, the same X chromosome...
True/False: v) True/False: Pressure always acts normal to a surface. vi) True /False: The fluid velocity is always tangent to a streamline. vii) True / False: Turbulent flows are not affected by surface roughness.
Determine whether each of the following is TRUE (i.e. always true) or FALSE (i.e. not always true) Justify your answers! (c) 2n-1(222) (a) 2n2 + n-1-0(2n2 +n). (b) 2n2 + n-1-0(2n2 + 2n).
Determine whether each of the following is TRUE (i.e. always true) or FALSE (i.e. not always true) Justify your answers! (c) 2n-1(222) (a) 2n2 + n-1-0(2n2 +n). (b) 2n2 + n-1-0(2n2 + 2n).
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