In comparing the chromosomes of humans, chimpanzees, gorillas, and orangutans which type of genomic evolution has occured with chromosome 3 in the orangutan compared to the other species?
A. inversion.
B. duplication.
C. splitting.
D. both inversion and duplication.
E. splitting of the gene and duplication of the entire chromosome.
A. inversion.
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Slime molds are classified as
a. protists. b. fungi. c. amoebozoans. d. protists and amoebozoans. e. protists, fungi, and amoebozoans.
The sequence of amino acids in a protein represents its ____
a. primary structure b. secondary structure c. three dimensional shape d. tertiary folding pattern e. biological function
Which of the following is not a major function of proteins in the cell membrane?
a. acting as receptors b. anchoring cells to other structures c. forming the entire glycocalyx d. forming channels
Dosage compensation in mammals typically involves the random inactivation of one of the two X chromosomes relatively early in development. Such X chromosome inactivation often leads to phenotypic mosaicism. Assume that black fur in cats is due to the
X-linked recessive gene b, whereas its dominant allele B produces yellow fur. A Bb heterozygote is a mosaic called "tortoise shell" or "calico." A mating between a black male and a calico female occurred. Give the phenotypes of the offspring. A) all black regardless of sex B) calico females, black females, yellow makes, and black males C) calico females and yellow males D) all calico regardless of sex E) calico females, yellow females, black males, and yellow males