( A ) the gallbladder added bile which helps break down fats
Answer:
Testcrosses clarify linkage because each phenotypic class of progeny corresponds to each gamete type produced by the dihybrid parent.
Explanation:
- A test cross involves the crossing of an individual with another phenotypically recessive individual so as to determine the zygosity of the former by analyses of the proportions of offspring phenotypes.
- In order to determine linkage, the test cross shows that if the parentals are more than the recombinants, we can say that the two genes such as b and c are genetically linked and therefore, they must be on the same chromosome.
- Also, the test-crosses help to find out which alleles came from which parent.
- By setting up testcrosses in which one parent is homozygous for the recessive alleles of both genes,we can analyze the gene combinations received in the gametes from the other, doubly heterozygous parent.
WHat is the question you are asking?
D. helps prevent flooding
E. helps to filter contaminants out of the water
Explanation:
Biodiversity refers to the variety of life forms in a particular area. It suggests that different forms of plants and animals can be found in particular place at any point in time.
The tropical rain forest regions of the world are known to be the most biodiverse .
- Biodiversity does not help to prevent flooding. Flooding is the inundation of water in a particular area. There is no correlation between flooding and biodiversity.
- It is not biodiversity that helps to filter contaminants out of water. Special sands such as diatomite are used for this purpose.
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Differences in air pressure at Earth's surface are caused by unequal heating of Earth. Warm air masses are less dense and have lower air pressure than cold air masses.
