Some genes encoding proteins that are essential to
the survival of the organism are called highly
conserved sequences. Which of the following is an
example of one of these proteins?
a. cytochrome b
b. muscle structural proteins
c. carbohydrate hydrolyzing genes
d. skin pigmentation
e. keratin
Answer: a
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Fungal spores and animal dander are considered to be which type of allergen?
A. Contactant B. Injectant C. Ingestant D. Inhalant
All of these statements about Chlamydomonas are true, EXCEPT
A. chlamydomonas has two flagella. B. each motile Chlamydomonas cell has a single haploid nucleus. C. chlamydomonas only reproduces asexually. D. chlamydomonas is photoautotrophic.
There is an autosomal gene that controls baldness, and its expression is sex-influenced. The gene for
baldness (B) is dominant in males but recessive in females. In females, the allele B1 for nonbaldness is dominant over the gene for baldness. If heterozygous, nonbald woman marries a nonbald man, what will be the appearance of their children? Work out the possibilities for each sex. What will be an ideal response?
A beneficial relationship between a plant and a glomeromycete is known as a _____.
A) hypha B) cuticle C) mycorrhiza D) lignin