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IgorC [24]
4 years ago
13

Choose all the answers that apply. Evolution _____. happens slowly over time is any change in the DNA of an organism only occurs

below the species level can be caused by genetic drift can be caused by natural selection
Biology
1 answer:
xxMikexx [17]4 years ago
6 0

Answer: The Answers are, A: happens all the time, D: can be caused by genetic drift, and E: can be caused by natural selection.

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Compared the Mendelian Dominance, how to incomplete dominance and codominance increase the number of phenotypes? Provide an exam
REY [17]

Answer/Explanation:

<h3>Incomplete dominance</h3>

In incomplete dominance, one allele is not entirely dominant over the other, so heterozygotes (organisms with two different alleles for the gene) show an intermediate or blended phenotype.

For example, consider flower colour.

  • If the allele for red flowers (R) was dominant over the allele for white flowers (r), then there are three possible genotypes (RR, Rr, and rr) and two possible phenotypes. (Red (RR and Rr) and white (rr)).
  • However, if the allele for red flowers (R) was incompletely dominant over the allele for white flowers (r), then there are three possible genotypes (RR, Rr, rr), and three possible phenotypes (red (RR), white (rr), and pink (Rr))
<h3>Co-dominance</h3>

In incomplete dominance, two alleles are both expressed, one is not dominant over the other. Therefore, heterozygotes (organisms with two different alleles for the gene) express both traits.

For example, consider flower patterns.

  • If the allele for spots (F) was dominant over the allele for stripes (f), then there are three possible genotypes (FF, Ff, and ff) and two possible phenotypes. (Spots (Ff and ff) and stripes (ff)).
  • However, if the allele for spots (F) was co-dominant to the allele for stripes (f), then there are three possible genotypes (FF, Ff, ff), and three possible phenotypes (spots (FF), stripes (ff), and spots and stripes (Ff))

8 0
3 years ago
In a resting neuron, the inside of the cell is __________.
Brums [2.3K]

More negatively charge than the outside.

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Individuals with one form of lactose intolerance do not produce the
Tema [17]

Answer: Transcription - A

Explanation:

This problem is talking about the lac operon and the gene expression of lac operon. If the gene is turned off, then transcription, the generation of mRNA won't occur.

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Lady bird [3.3K]
A function of the nucleus is D) Storing genetic material.
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Why do you think toxicology is an important area of study in veterinary science?
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Because many animals and situations include an animal that has been poisoned by maybe eating the wrong thing and if you don’t know how to treat toxicology many animals could die
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