In which of the following cases will a Barr body be seen?

A) only XX
B) XY
C) XO
D) only XXY
E) both XX and XXY


E) both XX and XXY

Biology & Microbiology

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A random change in allele frequencies over time due to chance is termed "________"

a. natural selection b. a bottleneck c. genetic drift d. gene flow

Biology & Microbiology

All photoreceptors ________

a. are found in eyes b. convert photon energy to visual images c. are found in vertebrates d. convert photon energy to sensory neuron excitation

Biology & Microbiology

Almost all houseplants, woody ornamentals, and orchard trees are clones grown from ____of a parent plant

a. root fragments b. stem fragments c. leaves d. pollinated flowers

e. seeds

Biology & Microbiology

Which organelle in a scavenging white blood cell would break down bacteria that had entered the body?

What will be an ideal response?

Biology & Microbiology