An inbred strain of plants has a mean height of 74cm. A second strain of the same species from a different geographical region a
lso has a mean height of 66cm. When plants from the two strain are crossed together, the F1 plants are a uniform height of 70cm. However, the F2 generation shows a wide range of heights: the majority are like the P1 and F1 plants, but approximately 1/1024 are only 50cm tall, and about 1/1024 that are 90cm tall. A.) What mode of inheritance is occuring here? B.) How many gene pairs are involved? C.) How much does each gene contribute to plant height? D.) Indicate one possible set of genotypes for the original P1 parents and the F1 plants that could account for these results? PLEASE EXPLAIN your reasoning. E.) Indicate three possible genotypes that could account for F2 plants that are 58cm high and 3 that account for F2 plants that are 74cm high? PLEASE EXPLAIN you reasoning.
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Environments likely to be characterized by the presence of dry scrubs and frequent wildfires are those that lack the presence of rain and suffer high sunlight hours.
When referring to the terrestrial biomes that meet the characteristics described, we can include:
- <u>Temperate grasslands</u>
- <u>Cold deserts</u>
The temperate grassland/cold desert biomes have:
- cold and dry winters
- hot, dry summers
- Extended sunlight hours
This biome is very dry, and the harsh weather makes it difficult for plants to grow, leading to their <em>dry scrub</em> characteristic. This biome also experiences frequent wildfires due to the <u>intense sunlight and lack of rain to which it is exposed.</u>
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