Answer:
1/2 or 50%
Explanation:
Given that the extra digit is a dominant trait, the man with an extra digit may be homozygous or heterozygous dominant for the trait.
However, having a daughter with his normal wife makes him heterozygous dominant. Let's assume that the genotype of the heterozygous dominant male is "Dd" and that of his wife is "dd".
The heterozygous dominant male and homozygous recessive female would have progeny in the following ratio= 1/2 Dd (child with extra digit): 1/2 dd (child with no extra digit).
Answer:
An earthquake
, a forest fire
, a hurricane and a volcanic eruption.
Explanation:
An earthquake
, a forest fire
, a hurricane and a volcanic eruption are the events that is responsible for the suitable conditions for primary succession because all the population of animals and vegetation are removed from an area and the new type of organisms is start to living in that new environment. These new organism has the ability to survive that environmental conditions. These events completely removed the population in the environment and provides conditions for primary succession.
Because plants cannot walk around and take their seeds to other places, they have developed other methods to disperse (move) their seeds. The most common methods are wind, water, animals, explosion and fire. Dandelion seeds float away in the wind.
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Answer: Option B
Explanation:
Desert farming is the practice of developing agriculture in deserts. Agriculture can be defined as the act of irrigation, water supply and farming.
The desert farming is different from the other types of farming and it has been practiced by the person living there.
These practices are to be used very precisely as the water is not available in a plenty amount. Taking into consideration drip irrigation is used in the desert and dry areas.
Drip irrigation can be defined as the modern method by which the micro-irrigation technique in which the water and the nutrients are saved and it allows the water to drip slowly into the roots of plants.
