The usual F2 phenotypic ratio of a dihybrid cross is
a. 1:1.
b. 2:1.
c. 9:3:3:1.
d. 1:2:1.
e. 3:1.
C
You might also like to view...
Each nucleosome contains:
A. four proteins: H2A, H2B, H3, and H4 B. a histone octamer composed of two copies of each of the following proteins: H1, H2, H3, and H4 C. a histone octamer composed of two copies of each of the following proteins: H2A, H2B, H3, and H4 D. four proteins: SMC1, SMC2, SMC3, and SMC4 E. a mixture of histone and SMC proteins.
Which event occurs in a human fetus with the XX combination of sex chromosomes?
a. Anti-Müllerian hormone is produced. b. The SRY gene is activated. c. Testosterone is secreted. d. The Wolffian ducts develop. e. The gonads develop into ovaries.
Which of the following refers to the type of interaction between two prokaryotic populations in which one benefits and the other is not affected?
A. mutualism B. commensulism C. parasitism D. neutralism
Current DTC genetic tests provide all of the following EXCEPT ________
A) an overwhelming amount of information regarding an individual's genetic risk factors B) information regarding risk factors for disease states C) allele-specific information with regard to an individual's genome D) a reliable substitute for a trained healthcare professional