Answer:
Option B
Explanation:
Given
Number of incidences or frequency of an autosomal recessive disease 
As per Hardy Weinberg's equation, frequency of a recessive genotype is 
As per first equation of Hardy Weinberg's -
so ,
As per second equation of Hardy Weinberg's -
Substituting the given values in above equation, we get -
![\frac{9801}{10000} + \frac{1}{100} + 2pq=1\\2pq = 1-(\frac{9801}{10000} + \frac{1}{100})\\2pq = 0.99%\\OR[tex]2pq=1](https://tex.z-dn.net/?f=%5Cfrac%7B9801%7D%7B10000%7D%20%2B%20%5Cfrac%7B1%7D%7B100%7D%20%2B%202pq%3D1%5C%5C2pq%20%3D%201-%28%5Cfrac%7B9801%7D%7B10000%7D%20%2B%20%5Cfrac%7B1%7D%7B100%7D%29%5C%5C2pq%20%3D%200.99%25%5C%5C%3C%2Fp%3E%3Cp%3E%3C%2Fp%3E%3Cp%3EOR%3C%2Fp%3E%3Cp%3E%5Btex%5D2pq%3D1)
%
Hence, option B is correct.
Crossing over does not prevent homologous chromosomes from separating during meiosis, hence, the statement is false.
CROSSING OVER:
- Crossing over is the process whereby non-sister chromatids of homologous chromosomes exchange their genetic materials.
- Crossing over occurs specifically during the prophase I stage of meiosis I. Via this process, genetic diversity is likely to occur in the daughter cells.
- Crossing over only assures that genes of homologous chromosomes are recombined, it does not stop them from separating in the Anaphase stage.
- Therefore, crossing over does not prevent homologous chromosomes from separating during meiosis, hence, the statement is false.
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Answer:
Mendel was interested in the offspring of two different parent plants, so he had to prevent self-pollination. He removed the anthers from the flowers of some of the plants in his experiments. Then he pollinated them by hand with pollen from other parent plants of his choice.
If it is the fill in the blanks.The answer is The circles,or orbits,for electrons are called energy levels.
Answer:
Idealized pyramid of net production uses the typical values of 1% for the conversion of sunlight energy to net primary production and 10% for trophic efficiency.
Explanation:
in real ecosystems, trophic efficiencies usually vary from about 5% to about 20%. As a result, net production diagrams for ecosystems have a pyramid shape. Two key factors explain why trophic efficiencies are relatively low, and thus why net production diagrams are shaped like pyramids. First, not all the organisms at one trophic level are eaten by organisms at the next trophic level. For example, not every plant is eaten by herbivores, and not every herbivore is eaten by carnivores. Second, because of the bioenergetics of animals, not all the food an animal eats is converted to new biomass. Significant amounts of energy are lost in feces, used in cellular respiration, and lost to the environment as heat.
