In Drosophila melanogaster, sex is determined by the ratio of the number of X chromosomes to the number of haploid sets of autosomes
Indicate whether the statement is true or false
TRUE
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Which of the following is not a method of heat sterilization?
A. Autoclaving B. Incineration C. Heating in a dry air oven D. Pasteurization
Thalassemias are associated with a(n) ____
a. amino acid substitution b. extended chain in beta globin c. imbalance in the production of alpha or beta globin d. excessive synthesis of beta globin e. altered rate of oxygen transport
Which of the following features are used to identify chordates?
A) A hollow nerve cord B) A notochord C) A tail during embryonic development D) All of the above are features used to identify chordates.
Which pairing accurately describes a one specific type of muscle tissue?
a. smooth muscle tissue – voluntary contraction b. cardiac muscle tissue – involuntary contraction c. smooth muscle tissue – attached to skeleton d. skeletal muscle tissue – one nuclei per cell e. skeletal muscle tissue – slowest speed of contraction