Adrenoleukodystrophy (ALD) is a recessive, X-linked disease resulting in defective enzymes attacking myelin in the nervous system. Which genetic predictions are possible for the offspring of a male with ALD and a female carrier of the disease?
Answer: Some males and females could have ALD.
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The ____ component of plasma constitutes antibodies
a. albumin b. dissolved gas c. fibrinogen d. hormone e. immunoglobulin
What is different about a monocot root as
compared to a eudicot root?
a. monocot roots do not take up water -- eudicot roots do b. monocot roots do not have a vascular system - eudicots roots do c. mature monocot roots emerge from the stem - mature eudicot roots emerge from the seed d. monocot roots do not have an endodermis - eudicot roors do have an endodermis e. monocot roots have hairs - eudicot roots never have hairs
How is the HIV provirus different from a lambda-phage prophage?
A) the HIV provirus is integrated permanently into the host cell's DNA. B) all subsequent generations of HIV-infected cells carry the provirus. C) all the offspring of a cell infected with a prophage will contain the virus. D) the HIV provirus is inactive inside the host cell. E) lambda phage-infected cells produce virus slowly over time.
Any agent that can change the base sequence of DNA is known as a:
A) mutagen. B) spontaneous event. C) trinucleotide repeat. D) free radical. E) cancer.