kaylaelaine18

19.02.2020 • 

Biology

An inbred strain of plants has a mean height of 24 cm. A second strain of the same species from a different country also has a mean height of 24 cm. The F1 plants from a cross between these two strains are also 24 cm high. However, the F2 generation shows a wide range of heights; the majority are like the P1 and F1 plants, but approximately 4 of 1000 are only 12 cm high, and 4 of 1000 are 36 cm high.
(a) What mode of inheritance is occurring here?
(b) How many gene pairs are involved?
(c) How much does each gene contribute to the plant height?
(d) Indicate one possible set of genotypes of the P1 and F1 plants that could explain their heights.
(e) Indicate one possible set of genotypes to account for F2 plants that are 18 cm or 33 cm high.

Ответ:

MarlonJ02

11.06.2020

Biology

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Answer;

Somatic mutations

Explanation;Somatic mutations are mutations that occur in body cells, that is the cells that do not make gametes. These mutations are not passed on to further generations; for example, if a mutation that changes a gene in a skin cell would not affect your children because skin cells don't produce gametes.Germ mutations on the other hand are mutation that occur in gametes or the cells that form gametes. These mutations may not affect the organisms in which they occur, but they can affect the future generations, if an offspring develops from a mutated gamete.

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