How many nucleotides are in a human chromosome?

A) Millions B) Four C) Two D) Thousands


A

Biology & Microbiology

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True or false: harmful mutations are always eliminated from the genome in one or a few generations because they decrease the survival and reproduction rates of the individuals that carry them

A. true B. false

Biology & Microbiology

Rosalind Franklin died from ovarian cancer at the age of 37. Her cancer was probably caused by DNA mutations that

arose from _____.

a. extensive exposure to long wavelength radiation b. contaminated DNA samples c. chemical exposure d. unrepaired DNA replication errors e. extensive exposure to x-rays

Biology & Microbiology

Embryonic shoots located at the tips of stems are called __________, while those located in the angle

between leaves and stems are known as __________. a. nodes; internodes b. axillary buds; terminal buds c. terminal buds; axillary buds d. axillary buds; lateral buds e. bud scales; bud scale scars

Biology & Microbiology

? Figure 27.5 Use the figure above to answer the following question. The letter "B" in the accompanying figure represents ____.

A. pericycle B. endodermis C. xylem D. root cortex E. phloem

Biology & Microbiology