<span>Crossover is the first way that genes are shuffled to give rise to genetic diversity. Crossover takes place in sexual reproduction. Chromosomes line up side by side and break off pieces of themselves, then trade those pieces with each other. When they break at the same place (locus) in the sequence of base pairs, the result is an exchange of genes called genetic recombination. That is the normal way for crossover to occur. Genetic recombination ensures that the daughter cells produced have a different genetic makeup from the parent cell and thus diversity is created.</span>
Here are two Eukaryotic cells Plant and Animal
the true statements about esophagus are :
- The esophagus is a muscular tube.
and
- The esophagus moves food from the mouth to the stomach.
i hope it helped.........
Answer;
-The bacterium would exhibit positive chemotaxis.
Explanation;
-Chemotaxis is the movement of cells or organisms in response to chemicals, whereby the cells are attracted (positive chemotaxis) or repelled (negative chemotaxis) by substances exhibiting chemical properties.
Flavonoids play a crucial role as signal molecules in promoting the formation of nodules by symbiotic bacteria commonly known as rhizobia. The roots of leguminous plants use positive chemotaxis to attract rhizobia. Flavonoids are the chemicals associated with attraction of Rhizobium bacteria.
An algal bloom has drained the lake of oxygen.
Explanation:
The possible cause of the fish death in the lake near the park is that an algal bloom has drained the lake of oxygen.
The green slime on top of the lake are the growing algae.
- This condition is caused by eutrophication.
- It occurs when nutrients are enriched in a water body causing the growth of algae.
- Algae bloom causes the depletion of oxygen levels in the ocean.
- They block off plants from producing oxygen and enriching water with it.
- Fishes need oxygen for their life actions.
learn more:
Algae brainly.com/question/1739812
#learnwithBrainly
