Distribution of daughter chromosomes derived from sister chromatids during meiosis II then leads to a total of ______ new cells, each with the haploid number of chromosomes.
Fill in the blank(s) with the appropriate word(s).
Answer: 4
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A nucleosome consists of
A. a stretch of DNA. B. an RNA molecule. C. a ribosome and RNA. D. a stretch of DNA and histones. E. two or more closely related genes.
The way the pancreas regulates glucose levels in the blood stream follows ________.
A. a positive feedback mechanism B. instructions from the brain C. a negative feedback mechanism D. The pancreas is not involved in regulating glucose levels in the blood.
Which of the following is NOT a characteristic of an autosomal recessive trait?
A. All of the children of two affected individuals are affected. D. Every affected individual has at least one affected parent. B. If two individuals are heterozygous, the risk of having an affected child is 1:4. E. All of these are characteristic of an autosomal recessive trait. C. For rare traits, affected individuals have unaffected parents.
If a material mixes readily with water it is identified as _________.
a. dehydrated b. hydrophobic c. hydrophilic d. saturated