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Elena-2011 [213]
3 years ago
7

Nonrenewable resources are those that _____.

Biology
1 answer:
bazaltina [42]3 years ago
7 0
I believe the answer is A the definition of a non renewable resource is “A non-renewable resource is a resource that does not renew itself at a sufficient rate” A is the only option to fit the definition
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Some guy from the 20th century
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In maize (corn) plants, a dominant allele I inhibits kernel color, while the recessive allele i permits color when homozygous. A
EleoNora [17]

Answer:

Phenotype ratio= 12 colorless : 3 purple : 1 red

Genotype ratio= 1:2:1:2:4:2:1:2:1

Explanation:

According to the given information, the dominant allele "I" is epistatic to P and p alleles and presence of "I" inhibits the expression of both "P" and "p" alleles.

A cross between two heterozygous plants for both locus would give the F2 progeny in 12 colorless: 3 purple: 1 red ratio.

Here, the F2 genotype with "I-G" and "I-gg" would produce colorless kernels while the ones with "ii-G-" would exhibit purple colored kernels. The F2 genotype "iigg" would beak red kernels.

Hence, the phenotype ratio= 12 colorless : 3 purple : 1 red

Genotype ratio would be same as for the mendelian dihybrid cross= 1 IIPP: 2 IIPp :1 IIpp: 2 IiPP :4 IiPp: 2 Iipp: 1 iiPP :2 iiPp: 1 iipp

6 0
4 years ago
When would a testcross be done?
vova2212 [387]
<span>Additional facts:
A test cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from that of the offspring.
Answer:
You'd use it when you wish to see if the one that you think is a homozygous dominant is a purebred, because if you did get a recessive offspring then it proves that the animal is a heterozygous and not a purebred.</span>
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3 years ago
Pls need an answers for these blanks<br><br><br> bio
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