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12 Jan 2018

“Genetically engineered” or “transgenic” are better terms than “GMO” for plants that have had genes inserted by non-sexual methods.

A. True

B. False

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Hubert Koch
Hubert KochLv2
14 Jan 2018
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Related questions

there could be more than one answer or no answer at all

1. _____ Females that reproduce sexually versus asexually are said to incur a “two-fold cost of sexual reproduction.” Which of the following costs are associated with sexual reproduction for females?

A) MALES! That do-nothing lot really does not directly contribute offspring to the next generation. Females would be better off making all daughters.

B) FEMALES! In most natural settings, those daughters compete with their mothers for potential mates and resources needed to successfully reproduce.

C) MITOSIS! Since sexual reproduction can produce many more offspring than asexual reproduction, there are energetic costs associated with the mitotic divisions required to produce those offspring.

D) MEIOSIS! Every time a gamete is produced, the parent loses a little bit of itself. Half to be precise since only half of its genes are passed on to sexually produced offspring.

E) DIVERSITY! Mothers maximize fitness if all offspring are genetically just like them. Sexual reproduction causes genetic diversity, which ultimately lowers the fitness of both parents.

If male sexual orientation (homosexual versus heterosexual) has a heritability of 0.5, what does that mean? Select one: a. 50% of people who identify as homosexual have genes for male homosexuality. b. 50% of the population variability in male sexual orientation is due to individuals having different genes. c. An individual’s homosexuality is caused 50% by his genes and 50% by his environment. d. More than one of the above is true e. None of the above is true

Hydrangea macrophylla plants can have flowers that are blue, white or pink. White plants are never true breeding. Crossing two white plants results in 2/3 white and 1/3 colored flowers (all pink, all blue or some pink and some blue). When true breeding blue plants are crossed with true breeding pink plants the resulting F1 generation are all blue. When these F1 Blue plants are crossed with white plants the progeny are 3/8 blue, 1/8 pink and 1/2 white.

When cuttings from a large F1 blue hydrangea plant are planted all over a housing development about ½ the adult plants produce pink flowers the following year and ½ produce blue flowers. Note that all the plants in the housing development are genetically identical.

F. Based on the results of the above experiment you have decided to apply for a grant from Monsanto to further understand the genetics of flower color in Hydrangea macrophylla. You feel this is important research as results from your study may aid in developing a profitable ornamental strain of hydrangea. You have two main goals: 1: determine heritability(H2/h2) of flower color and 2: Determine the genes involved in flower color. In the space provided briefly outline your experimental design for each goal and your hypothesis and/or predicted results.

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