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3 years ago

Which small-scale mutation would be most likely to have a catastrophic effect on the functioning of a protein?.

Biology

1 answer:

vovangra [49]3 years ago

6 0

Answer:

A mutation in DNA generates a UGA stop codon in the middle of the mRNA coding for a particular protein. A second mutation in the cell's DNA leads to a single nucleotide change in a tRNA that allows the correct translation of this protein; that is, the second mutation 'suppresses" the defect caused by the first. The altered tRNA translates the UGA as tryptophan. What nucleotide change has probably occurred in the mutant tRNA molecule? What consequences would the presence of such a mutant tRNA have for the translation of the normal genes in this cell?

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The only cellular respiration process that can be considered anaerobic is _____.

Nesterboy [21]

The correct answer is fermentation.

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In comparison, some of the living species utilize an inorganic substance as an ultimate electron acceptor. Both the procedures are known as anaerobic cellular respiration, where the species are obtaining energy for their application in the absence of oxygen.

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3 years ago

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3 years ago

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suter [353]

Answer:

m = - 4

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3 years ago

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offsprin

Andrei [34K]

Answer:

The correct answer would be 2 in 4.

According to the question Xo and XO show codominance and express themselves completely when present in heterozygous condition. Cats bearing XoXO show patchwork of black and orange fur and are called tortoiseshell cats.

Xo codes for orange color fur and XO codes for black color fur. In addition, Y chromosome does not contain any gene associated with fur color.

Now, genotype of mother cat is XOXO (orange fur). So, the gametes formed would be XO only.

The genotype of father cat is XoY(black fur). So, the gametes would be Xo and Y.

The cross would lead to the formation of two male cats each having XOY as their genotype and two female cats each with XOXo as their genotype.

Hence, both the male cats would show orange fur and both the female cats would show patchwork of orange and black fur.

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They occur in terrestrial ecosystems.

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4 years ago