BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 10, Problem 11SA
Summary Introduction
Introduction:
In mammals, two X chromosomes (XX) inherits in a female, one inherits from her father and other comes from her mother. Out of these two chromosomes, one is tightly condensed and do not express, these condensed X chromosomes are known as Barr bodies. The inactivation of the X chromosomes ensures that most of the genes on that chromosome are not expressed.
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Students have asked these similar questions
The characteristic “X” shape of chromosomes is _____.
a.
a result of maximum compaction of the chromosome
b.
due to the wrapping of DNA around histones
c.
only evident during cell division
d.
indicative of a cell that is no longer dividing
e.
only found in the female sex chromosome
During X chromosome inactivation,______ . a. female cells shut down b. RNA sticks to a chromosome c. pigments form
Choose the option that best fits the blank.
Henrietta Lacks was female, so, naturally, all the cells from her derived cancerous cell line have _________ chromosomes.
A. Only X
B. X and Y
C. Only Y
Chapter 10 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 10 - Gene expression does not vary by ________. a. cell...Ch. 10 - Binding of _______ to _______ in DNA can increase...Ch. 10 - Prob. 3SACh. 10 - Mechanisms that govern gene expression do not...Ch. 10 - Muscle cells differ from bone cells because they...Ch. 10 - Prob. 6SACh. 10 - Prob. 7SACh. 10 - Prob. 8SACh. 10 - Which of the following includes all of the others?...Ch. 10 - Prob. 10SA
Ch. 10 - Prob. 11SACh. 10 - Prob. 12SACh. 10 - Prob. 13SACh. 10 - True or false? Gene expression patterns can be...Ch. 10 - Match the terms with the most suitable...Ch. 10 - Why are some genes expressed and some not?Ch. 10 - Do the same mechanism of governing gene expression...Ch. 10 - Prob. 3CTCh. 10 - The photos below show flowers from two Arabidopsis...
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- Pairs of chromosomes with almost identical geneticcomposition and that are found in cells of both males andfemales are calleda. sex chromosomes.b. autosomes.c. polyploid.d. chromatids.arrow_forwardHuman body cells are diploid, which mean they______ . a. divide to form two cells b. have two full sets of chromosomes c. contain two chromosomesarrow_forwardSister chromatids are NOT _____. A. tightly linked together at a centromere. B. present throughout the cell cycle C. created when DNA is replicated. D. identical to each other.arrow_forward
- A female fruit fly has one normal X chromosome and one X chromosomewith a deletion. The deletion occurred in the middle ofthe X chromosome and removed about 10% of the entire length ofthe X chromosome. Suppose you stained and observed the chromosomesin salivary gland cells of this female fruit fly. Draw thepolytene arm of the X chromosome. Explain your drawing.arrow_forwardMeiosis explains whya. you inherited half of your DNA from each of your parents.b. the sister chromatids in a chromosome are identical to each other.c. each of your somatic cells contains the same DNA.d. zygotes contain half as much DNA as somatic cells.arrow_forwardIn a diploid cell, two homologous chromosomes are: A) similar , but from two different species B) mirror images of each other C) similar, but from two different people D) identical to each other E) copies of each otherarrow_forward
- A human cell containing 22 autosomes anda Y chromosome is(A) a sperm.(B) an egg.(C) a zygote.(D) a somatic cell of a malearrow_forwardIncluding the sex chromosomesthe chromosome number of a normal human cell is 23 and the chromosome number of this HeLa cell isarrow_forwardHumans have 46 chromosomes in each somatic cell.a. How many chromosomes does a child receive fromits father?b. How many autosomes and how many sex chromosomes are present in each somatic cell?c. How many chromosomes are present in a humanovum?d. How many sex chromosomes are present in ahuman ovum?arrow_forward
- In experiment of following chromosomal DNA movement through meiosis, Blue have 44 chromosomes in every cell. Determibne how many chromosomes you would expect to find in the following: a. sperm cell b. egg cell: c. Daughter Cell from mitosis: d. Daughter cell from Meiosis ll:arrow_forwardA cell has n=2. How many total chromosomes are in a diploid cell? b. Draw this cell during metaphase of mitosis:arrow_forwardAlternative forms of the same gene are called _________ . a. gametes c. alleles b. homologous d. sister chromatidsarrow_forward
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