If a woman is positive for a recessive X-linked trait, she must have inherited it from which of her parents?
a. both parents
b. her mother
c. her father
d. neither parents
a. both parents
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J. A. Milburn and R. P. C. Johnson developed an acoustic method for detecting cavitation in plants. This involves "listening" for characteristic clicks produced during air-bubble formation, using sensitive microphones and amplifiers
In one experiment with the castor bean plant (Ricinus communis), they detached leaves by cutting the petioles and subjected them to various treatments. Which of the following would be LEAST likely to be observed in such an experiment? A) as the leaf is allowed to wilt, recording many clicks that approximately equal the estimated number of vessel elements in the cut petiole B) after increasing transpiration by blowing warm air across the leaf, recording an increased rate of clicking C) after adding water to the cut end of the petiole, recording an increased rate of clicking
Pasteurization results in the sterilization of food products
Indicate whether this statement is true or false.
Your chromosomes are located _______ and they are made of ___________
a. floating in the cytoplasm, lipids b. in the cell membrane, protein c. inside the mitochondria, genes d. inside the cytoplasm, protein e. inside the nucleus, DNA
The house fly, Musca domestica, has a haploid chromosome number of 6. How many chromatids should be present in a diploid, somatic, metaphase cell?
A) 18 B) 24 C) 3 D) 12 E) 6