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Igoryamba
2 years ago
13

What is the result of crossing over, as shown in the illustration? o the chromosomes replicated o the chromosomes condensed o th

e genetic variation increased o the spindle fibers aligned the chromosomes​

Biology
1 answer:
photoshop1234 [79]2 years ago
7 0

Answer:

In synapsis, the genes on the chromatids of the homologous chromosomes are precisely aligned with each other. An exchange of chromosome segments

Explanation:

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One of these is wrong but I don’t know which one can someone please help me
mario62 [17]
I think both of them are positive feedback
6 0
3 years ago
Why is ld50 data so useful in dealing with human health and environmental toxins?
alex41 [277]
LD50 or TD50: it is the Lethal Dose 50 (to refer to animals), and Toxic Dose 50 (to refer to the human being). To refer to animals is: the dose of a drug, a drug (generally a substance) that kills 50% of a population. To refer to the human being: it is the dose of a drug, a medicine (in general a substance) that produces toxicity to 50% of a population.<span>

<span>Find the LD50, it is very important to determine the dose in which the drug produces toxic effects and thus be able to approach or deduce the effective dose, that in cases of administering a new drug to the human being, it is necessary to find the effective dose 50 (Dose of the drug that produces a therapeutic effect to 50% of the population) in order to determine the Therapeutic Margin or Therapeutic Index.</span></span>
7 0
3 years ago
Meiosis allows for the reshuffling of maternally and paternally-inherited alleles between different genes, thus allowing for hig
notsponge [240]

Recombination reshuffles alleles of two genes that lie on the same chromosome type, whereas independent assortment reshuffles alleles of two genes that lie on different chromosome types.

Explanation:

Alleles are two forms of same gene, they are located on the same loci of the homologous pair.

Recombination occurs when alleles from two homologous chromosomes get reshuffled during crossing over in meiosis.

Independent assortment refers to the tendency of alleles to be inherited independently from one generation to other.

3 0
3 years ago
a purple flower with an unknown genotype crosses with a white flower. determine the genotype of the purple flower if purple(P) i
yan [13]
This sounds like a test cross. Because P is dominant, the purple flower could have a genotype of Pp or PP. If all of the offspring of the test cross are purple, then the purple flower has genotype PP. If half of the offspring of the test cross have purple and half have white, then the purple parental flower's genotype is Pp.
5 0
3 years ago
Based on the bacterial transformation using the plasmid containing the gene for GFP, what phenotype would you expect for cells f
astra-53 [7]

Answer:

No colonies, no growht.

Explanation:

The statement does not mention that apart from the GFP reporter gene, the plasmid contains ALSO the ampicillin resistance gene. This way, if you spread your traqnsformed cells on LB plates containing ampicillin, they will not be able to grow.

3 0
3 years ago
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