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Nimfa-mama [501]
3 years ago
13

The idea that chromosomes orient themeselves randomly during metaphase I is ________________________. This leads to ____________

_______ combinations of genes.
Biology
1 answer:
lara [203]3 years ago
6 0

Answer:

The idea that chromosomes orient themselves randomly during metaphase I is Independent Assortment. This leads to more combinations of genes.

Explanation:

During metaphase I, the pair of chromosomes align in the plate of the cell. In this step, the independent assortment takes place.

The independent assortment is the distribution of different genes into two gametes, is independent, because the distribution of the different genes, does not influence the distribution of the other genes. The independent assortment leads to new combinations of genes from the parental and maternal side, resulting in offsprings that do not look exactly like their parents.

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Which type of selection tends to increase genetic variation? A. Disruptive selection B. Directional selection C. Stabilizing sel
aliina [53]

Answer:

Which type of selection tends to increase genetic variation? A. Disruptive selection B. Directional selection C. Stabilizing selection

The Answer is option A (Disruptive selection)

Explanation:

Selection can either shift the mean value of a trait, reduce the trait's variation, or increase its variation.

Genetic variation which allows natural selection to increase or decrease frequency of alleles already in the population is a source of phenotypic variation as it refers to differences in all the hereditary information of members of the same species.

Disruptive Selection is important in maintaining variation and initiating speciation as it Increases Variation by favoring alleles corresponding to more extreme phenotypes. But for it to occur, the mean phenotype has to experience the lowest fitness. Disruptive selection affects the frequency distributions of alleles and genotypes within a population.

Disruptive selection is based on the variance of a trait in a population as it increases genetic variance by equalizing the frequencies of existing alleles at polymorphic loci (a genetic loci with two or more alleles). Disruptive selection maintains and may even increase variation in natural populations by favoring extreme phenotypes, individuals with extreme values for a trait have greater reproductive success than individuals with intermediate values.

7 0
3 years ago
Two people are exercising at a gym. Person X notices a burning sensation in several muscles, while person Y does not feel any di
Alex Ar [27]

Answer:

See the answer below

Explanation:

Person X is feeling a burning sensation in several muscles<u> because of the accumulation of lactic acid due to inadequate oxygen in their system.</u> When oxygen becomes inadequate during exercises, anaerobic respiration takes place to augment the oxygen shortage and this leads to the production of lactic acid which accumulates up in the muscles and gives a burning sensation.

  C_6H_1_2O_6 --> 2C_3H_6O_3

Person Y does not feel any burning sensation in their muscles <u>because oxygen is adequate in their system and they do not need to respire anaerobically.</u> <em>Person X exercise regime must have been more rigorous than that of person Y.</em>

5 0
3 years ago
During mitosis the spindle fibers maneuver the chromosomes to where they line up
jeka57 [31]
The answer is D, metaphase
6 0
3 years ago
What's a 2-3 sentence explanation about energy in an ecosystem?
ycow [4]

Answer: Energy and nutrients are passed around through the food chain, when one organism eats another organism. Any energy remaining in a dead organism is consumed by decomposers.

HOPE THIS HELPS

3 0
2 years ago
Scientists are human beings and are, like all human beings, susceptible to personal and group biases that may influence how they
Gre4nikov [31]

Answer:

Peer review

Explanation:

<em>Before a research can be published, it is subjected to scrutiny by experts that are versed in the same field. The scrutiny ensures that research authors observed the required standards expected in their fields and ensure that personal biases and unwarranted claims are eliminated before the research is published.</em>

This is otherwise known as peer review.

6 0
3 years ago
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