Below is a pedigree of a fairly common human hereditary trait; the boxes represent males and the circles represent females. Filled-in symbols indicate the abnormal phenotype
Given that one gene pair is involved,
(a) Is the inheritance pattern X-linked or autosomal?
(b) Give the genotype of each individual in the pedigree. If more than one genotypic possibility exists, present all possible alternatives.
(a) autosomal recessive
(b)
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The first part of a new polypeptide chain being produced in a eukaryotic cell has a signal peptide. Translation of this
polypeptide ____.
a. occurs on a free ribosome in the cytosolb. begins on a free ribosome in the cytosol and is completed on the rough ER c. occurs in the Golgi apparatus d. begins on the rough ER and is completed in the Golgi apparatus e. occurs on the rough ER
Which hormone is responsible for the development of female secondary sex characteristics?
a. testosterone b. estrogen only c. progesterone only d. estrogen and progesterone e. human chorionic gonadotropin
The main role of the liver is to ________.
A. produce bile, which helps the process of digestion B. absorb nutrients C. break large food into smaller food bits D. absorb water
The euphotic zone is confined to the:
What will be an ideal response?