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Lina20 [59]
2 years ago
8

When huge numbers of species die out in a short period of time, it's known as a mass extinction.

Biology
1 answer:
Black_prince [1.1K]2 years ago
4 0
True. When huge numbers of a species die over a short period of time, the term, mass extinction, is used to describe this. 
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For an x-linked gene, there are two alleles, a and
Temka [501]
So basically you have to like multiply and stuff so you would freaking get like 250 or something. 
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3 years ago
Cells need energy to function, but also need to be able to heal and grow for a person to be healthy. Which of the following desc
just olya [345]

Answer:

B. Oxygen molecules recombine to allow cells to get larger

8 0
3 years ago
How do researchers prepare an intron-free copy of a eukaryotic gene for use in creating transgenic bacteria?
Tcecarenko [31]

The researchers prepare an intron-free copy of the eukaryotic gene for the use in creating the transgenic bacteria by using the reverse transcriptase to make the cDNA from the mature mRNA

The structure of the eukaryotic genes. Most of the eukaryotic genes are contain the segments of the coding sequences (exons) that interrupted by the noncoding sequences (introns). Both the exons and the introns are transcribed to yield a long and primary RNA transcript.

Eukaryotic DNA is the linear, compacted into the chromosomes by the histones, and has the telomeres at each end to protect from the deterioration. The Prokaryotes contain the circular DNA in addition to the smaller, transferable DNA plasmids. Eukaryotic cells contain the mitochondrial DNA in the addition to the nuclear DNA

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brainly.com/question/28297163

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3 0
1 year ago
Fruit color in a particular plant is controlled by a set of three quantitative trait loci (i.e., QTLs or polygenes), that work i
tankabanditka [31]

Answer:

1/8

Explanation:

Given that the trihybrid parents have AaBbCc genotype for fruit color. The trait is a quantitative trait i.e. each dominant allele will have an additive effect on it. In this case, AaBbCc and AABBCC will not produce same fruit color because AaBbCc has only three loci contributing to the color while in AABBCC all the six loci are contributing to the color. For an offspring to be exactly similar to the AaBbCc parents it should have the same genotype of AaBbCc.

The probability of Aa to come from a cross between Aa and Aa is 2/4 or 1/2

The probability of Bb to come from a cross between Bb and Bb is 2/4 or 1/2

The probability of Cc to come from a cross between Cc and Cc is 2/4 or 1/2

So the collective probability of AaBbCc offspring from a cross between AaBbCc and AaBbCc parents would be=

1/2 * 1/2 * 1/2 = 1/8

Hence, assuming no effects of the environment, 1/8 of the offspring will have the same fruit color phenotype as the trihybrid parent.

4 0
3 years ago
A nurse obtains a health history from a mother who son is taking methylphenidate. she reports that he is having hallucinations.
FromTheMoon [43]

Methylphenidate refers to a CNS stimulant mainly used in the treatment of ADHD (attention deficit hyperactivity disorder) in children between the age of 6 to 12, adults up to the age of 65, and adolescents. It can also be used in the treatment of narcolepsy.  

However, the application of the drug may also bring some side-effects with it. Some of the common side-effects related to medicine are decreased appetite, headache, hallucinations, sweating, fever, dizziness, increased heart rate, weight loss, and others.  

In the given case, due to the application of the drug, the child is having hallucinations. Thus, in the given case, the nurse should recommend the client to report the manifestations as quick as possible, and discontinue the use of medicine.  


7 0
3 years ago
Read 2 more answers
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