Haemophilus influenzae is the most common bacterial cause of pinkeye
Indicate whether the statement is true or false
TRUE
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Maternal effect genes
A. are all found on the X chromosome. B. are expressed only in female offspring. C. can encode proteins that get translated upon fertilization to establish concentration gradients that span the egg. D. are expressed only in male offspring because they are hemizygous. E. are expressed when exposed to high concentrations of estrogen.
The number of chromosomes in a eukaryotic cell
a. differs in various somatic cells of an individual. b. varies during the life cycle. c. is haploid among asexually reproducing forms and diploid if they reproduce sexually. d. is the same for all members of a species. e. is dependent on the age of the tissue.
During gamete production, the genetic information within the cells is duplicated and exchanged prior to forming the gamete cells. What is the benefit to the species to have this genetic exchange?
A) Genetic exchange increases variation among offspring. B) The organisms created from this genetic exchange will be identical to one of the parents that participates in reproduction. C) The DNA produced as a result of genetic exchange will have identical copies of the same genes, increasing the likelihood that more offspring will be produced. D) The genetic information exchanged is the cause of mutations, which are always necessary for the species' survival.
Your body has two pectoral girdles and two pelvic girdles.
a. true b. false