In human chromosomes, satellite DNA sequences of about 170 base pairs in length are present in tandem arrays of up to 1 million base pairs. Found mainly in centromere regions, these DNA sequences are called ________
A) telomeres
B) telomere-associated sequences
C) primers
D) euchromatic regions
E) alphoid families
Answer: E
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Children born with ____________________ have genital structures that are neither fully male nor fully female
Fill in the blank(s) with correct word
Global warming has led to less snow cover in some areas. Snow cover provides insulation for
some burrowing, hibernating animals. In a population of rodents, some animals have slightly thicker fur, and animals with this trait are more likely to survive the winters with low snow cover and thus produce offspring in the spring. This scenario is an example of
a. an adaptation. b. evolution. c. natural selection. d. homology.
In which type of microscopy is a beam of electrons used to scan the specimen, followed by the conversion of the
excited electrons to a three-dimensional image?
a. confocal laser scanning microscopyb. phase-contrast microscopy c. bright field microscopy d. scanning electron microscopy e. fluorescence microscopy
Can epigenetic change cause any differences between different cells in a single organism?
What will be an ideal response?