Crossing over occurs at the four-strand stage when two homologous chromosomes, each consisting of a pair of sister chromatids, are paired. Each crossover involves just two of the four strands and generates two recombinant strands.
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The answers that best fit the blanks are MATERNAL BLOOD ANALYSIS and ULTRASOUND, respectively. In prenatal diagnosis, there are certain methods that should not be done routinely for the reason that these may injure the fetus, except for routine ultrasound, which checks the status of the fetus, and maternal blood analysis, which assesses the current status of the mother.
3 types of energy that could be used in my house would be solar, wind, and normal electric. The ideal energy source that is not harmful to the environment is solar, as it can power a house, and doesn't use up non-renewable resources.
Brainliest, please?Thanks!
Answer:
The statement is true.
Explanation:
During the first half of the 20th century, racism was extreme and constant in many countries. This racist thinking forced African American people to eat, drink, study and do everything in different places. Also, the only work they could do was housekeeping or physical work like construction.
The answer to this question would be: the more force used, the less effective it is.
Sometimes, more force in counterinsurgency can cause a less effectivity. It was called paradox because with more force you should expect more results and more efficiency. But more force could mean higher possibility for collateral damage which can cause loss, not gain. An overwhelming force also might be pictured as brutality.
