The nervous system contributes to the success of birds as flying animals because of

1 answer:

5 0

The nervous system contributes to the success of birds as flying animals because of all of these following things:
1. the well-developed integrative center of the brain that controls eating, singing, and flying
2. the well-developed center used to coordinate movement and balance
3. the well-developed optic lobes

Thanks to these things, birds are quite successful at flying because of their developed nervous system.

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An increase in the volume of forests and phytoplankton would lead to a reduction in free "blank" , which in turn could cause a d

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Answer: Carbon dioxide

Explanation:

The forests and phytoplankton are carbon sinks, which absorbs the green house gas carbon dioxide from the atmosphere for photosynthesis. The carbon dioxide from the atmosphere and water are used as reactant in photosynthesis to yield carbohydrates and oxygen as products. Thus the carbon dioxide level in atmosphere decreases. This is necessary for controlling pollution in the environment and reducing the environmental temperature as carbon dioxide can make the environment warm.

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What is the exchange of segments of dna between the members of the pair of cromezones

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Answer:

CROSSING OVER is the exchange of segemetics of dna or genetic matierial between the members of the pairs of cromezones

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consumers

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Heterotrophs don't make their food.

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Summarize the steps of sexual reproduction and explain how it increases genetic diversity

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Sexual reproduction occurs through the stages of meiosis. Meiosis itself has two different rounds.

In the first round, the cell grows, copies its chromosomes, and readies itself for division (Interphase). Then, the chromosomes themselves condense and match up perfectly with a partner (specifically called a homologue partner) in Prophase I. These partners trade parts in what is called crossing over. This increases genetic diversity because it creates new combinations of chromosomes with unique alleles. After Prophase I, the chromosomes prepare for splitting (Metaphase I), and the homologues are then separated and moved to different sides of the cell (Anaphase I). Lastly, the chromosomes successfully arrive at the opposite ends, forming two daughter cells (Telophase I and Cytokinesis). This ends the first round of meiosis.

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In sheep, the allele for belly fur (A) is dominant to the allele for no belly fur (a). A mother with the genotype As and the fat

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25%

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In sheep, the allele for belly fur (A) is dominant to the allele for no belly fur (a). A mother with the genotype Aa and a father with the genotype Aa produce an offspring. What is the percent chance that the offspring will have NO belly fur?

Allele A is dominant over allele a.

Genotype of mother = Aa

Genotype of father = Aa

Crossing Aa and Aa:

Aa x Aa = AA, 2Aa, and aa

Since A is dominant over a, both AA and Aa have belly fur.

Hence, the ratio of the offspring with belly fur to those without belly fur is 3:1.

Percentage of the offspring without belly fur is 25%.

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