1. The human Y chromosome is about 50 million base pairs long. About how many nu

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Question

1. The human Y chromosome is about 50 million base pairs long. About how many nucleosomes would you expect to find associated with this chromosome?

Select one:

a. 50,000,000

b. 2,500

c. 50,000

d. 250,000

e. 1,000,000

2. A ribosomal RNA gene is an example of which type of DNA sequence in eukaryotes?

Select one:

a. Moderately repetitive DNA

b. Short interspersed elements

c. Highly repetitive DNA

d. Long interspersed elements

e. Unique-sequence DNA

3. Paternal transmission of mitochondria is common in which group?

Select one:

a. most flowering plants

b. humans

c. most gymnosperms

d. mice

e. insects

4. Which of the following amino acids has a positive charge that helps to hold the DNA in contact with the histones?

Select one:

a. Valine

b. Serine

c. Arginine

d. Alanine

e. Leucine

1. D 250, 000. A nucleosome contains 200 bp. So dividing 50 million with 200 gives 250,000.

2. A. moderately repetitive DNA. A gemone contains about 1000 copies.

3. E Insects. They are seen in ruitflies, honeybees and cicadas.

4. C Arginine. The side chain o Arginine helps to bind to histones

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