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3 years ago

True or false plants help produce carbon compounds through photosynthesis

Biology

1 answer:

Katyanochek1 [597]3 years ago

3 0

Its true,plants do produce carbon conpunds through photosynthesis. forms the basis of most of life on Earth.

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When the concentration of solute and solvent are equal on both sides of the membrane.?

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It is called Isotonic

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3 years ago

Why is RNA thought to have been the first genetic material? A. RNA has been found on meteorites. B. Primitive organisms, such as

Gala2k [10]

Answer:

Explanation:

Because if they have traces of RNA in them, then it might be the first genetic material

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2 years ago

Mutations occur when segments of DNA are accidentally rearranged through the deletion, insertion, or substitution of one or more

7nadin3 [17]

If a mutation occurs in the genes of reproductive cells (gametes) that mutation is termed a germinal mutation. Germinal mutations usually are not expressed in the individual containing the mutation, but gametes that carry the mutation will pass it on to the offspring. So, we say that the germinal mutations are hereditary mutations, inherited from a parent and present in every somatic and germline cell in the offspring.

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3 years ago

Read 2 more answers

The observable traits of an organism (such as hair color or height) is referred to as the:

luda_lava [24]

Answer: Phenotype

Explanation:

Phenotype refers to the total physically observable feature of an organism. it include hair color, height, body size etc

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3 years ago

In tomatoes, a heterozygous plant with normal fruit and purple stems is crossed with a recessive plant having fasciated fruit an

Pani-rosa [81]

Answer:

Recombination frequency, P = 0.23.

If the recombination frequency is < 50%, genes are linked. A RF of 23% tells us that these two genes are in the same chromosome, close enough to be linked.

1% of recombinations = 1 map unit
23% = 23 map units

The genes for stem color and fruit type seem to be in the same chromosome, linked and 23 MP apart.

Explanation:

In the present example, the genes for stem color and fruit type seem to be linked.

To know if two genes are linked, we must observe the progeny distribution. If individuals, whos genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. If we observe a different distribution, that is that phenotypes appear in different proportions, we can assume that genes are linked in the double heterozygote parent.

In this way, we might verify which are the recombinant gametes produced by the di-hybrid, and we will be able to recognize them by looking at the phenotypes with lower frequencies in the progeny.

The following distribution of offspring is observed:

normal fruit, purple stems 38.5%
fasciated fruit green stems 38.5%
normal fruit, green stems 11.5%
fasciated fruit, purple stems 11.5%

38.5% + 38.5% + 11.5% + 11.5% = 100%

N (total number of individuals in the progeny) = 100

number of individuals with normal fruit, purple stems 38.5
number of individuals with fasciated fruit green stems 38.5
number of individuals with normal fruit, green stems 11.5
number of individuals with fasciated fruit, purple stems 11.5

To calculate the recombination frequency we will make use of the next formula: P = Recombinant number / Total of individuals. The genetic distance will result from multiplying that frequency by 100 and expressing it in map units (MU).

P = Recombinant number / Total of individuals.

P = 11.5 + 11.5 / 100

P = 0.23

We need to know that 1% of recombinations = 1 map unit = 1cm. Also, the maximum recombination frequency is always 50%. This means that if the recombination frequency is < 50%, genes are linked. A RF of 23% tells us that these two genes are in the same chromosome, close enough to be linked. FR 23% = 23 UM.

6 0

3 years ago