Many single-celled eukaryotes that normally exist in a haploid state reproduce asexually by:
A. meiotic cell division.
B. binary fission.
C. mitotic cell division.
D. fusion.
C
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Diets high in fat and carbohydrates affect inbred lines of mice differently. One line becomes obese and the other does not. This is called a ____ interaction
Fill in the blank with the appropriate word.
Which of the following cells conduct sugars and other organic solutes?
a. tracheids b. vessel elements c. companion cells d. sieve elements e. xylem
Congenital deafness in humans is due to the homozygous condition of either of the recessive alleles d or e, or both
Both dominant D and E are necessary for normal hearing. Gene D/d affects the middle ear, while gene E/e affects the inner ear. It does not matter how good the normal inner ear (as indicated by E__) is; if there is something wrong in the middle ear, the individual is unable to hear. The same applies for the other gene. Give the phenotypic results of the following crosses: (a) Dd EE x Dd EE (b) Dd Ee x Dd Ee (c) dd EE x DD ee (d) Dd EE x Dd ee (e) Dd EE x DD Ee What will be an ideal response?
Which type of somatic receptor detects touch and pressure in the skin?
a. Melanocytes b. Hair and hair follicle c. Glands of skin d.Cutaneous receptors