A genetics researcher finds that a form of human albinism in a certain population is controlled by the recessive allele, a, for the absence of skin pigment and the completely dominant allele, A, for presence of skin pigment. If the recessive allele occurs in 30% of this population, what percent of the population has skin pigment but also carries the recessive allele?21 percent
42 percent
91 percent
51 percent
Answers
Answer:
Option A
Percent of the population that has skin pigment but also carries the recessive allele is percent
Explanation:
As per hardy-weinberg equation,
------------- Eq(A)
where
frequency of the homozygous genotype (dominant)
frequency of the homozygous genotype (recessive)
frequency of the heterozygous genotype (recessive)
Also, sum of the allele frequencies at the locus is equal to one.
Thus, ------------- Eq(B)
Here frequency of recessive allele i.e %
Substituting this in equation B, we get
frequency of dominant allele i.e %
Substituting the value of frequency of both dominant and recessive allele in equation A, we get
Thus, percent of the population that has skin pigment but also carries the recessive allele is percent
Related Questions
After a volcanic eruption, lava flows on the surface of the Earth. After the lava has time to cool, scientists notice that plants are starting to grow on the lava surface. What kind of ecological process could you infer is happening and why?
Tail length in mammals is a heritable trait. A pig with a 6 cm tail was mated to a pig with a 30 cm tail. All F1 offspring had a tail of length 18 cm. An F2 generation was made by crossing F1 individuals. This resulted in many piglets whose tails ranged in 4-cm intervals from 6 to 30 cm (6, 10, 14, 18, 22, 26, 30). The majority of pigs had 18 cm tails, 1/64 had 6 cm tails, and 1/64 had 30 cm tails.These results are consistent with what genetic model?(a) Two genes, each with two alleles that show dominance(b) Two genes, each with two alleles that act additively(c) Three genes, each with two alleles that show dominance(d) Three genes, each with two alleles that act additivelyAn F2 piglet with an 18 cm tail is heterozygous at each of the tail-length loci, and is mated to an F2 piglet with a 6 cm tail. Write down the predicted offspring genotypes and calculate the predicted tail lengths. What is the expected frequency of piglets with a 14 cm tail length?
Humans originated in Africa about 7 million years ago: if life on earth started 3.5bya ago and represented 24 hours from then to today, how many minutes of these 24 hours would be devoted to this 24-hour clocka) since the first humans showed up?b) since Humans showed up 300,000 ya?
Which description best explains Watson and Crick's DNA model?
Answers
Answer:
Option A, helps prevent rapid breakdown of the messenger RNA
Explanation:
The poly-A tail is a chain of adenine nucleotides which when get attached to the messenger RNA during RNA processing enhances the stability of the molecule and therefore prevents it from breaking down. This is required because after the transcription of gene in a eukaryotic cell, newly formed RNA molecule undergoes several modifications. It also helps is preventing the new RNA from enzymatic degradation in the cytoplasm and translation.
Hence, option A is correct
B. The two-dimensional structure of tRNAs exhibits a cloverleaf pattern.
C. tRNAs are produced in the nucleus.
D. functional tRNAs have been spliced by splicesomes.
E. tRNAs possess an anticodon complementary to the codon.
Answers
Answer:
D. functional tRNAs have been spliced by splicesomes.
Explanation:
Functional tRNAs are not spliced by splicesomes, they are trimmed with the help of RNAases instead.
In all tRNAs, RNAase P cuts at 5'end so as to produce a monophosphate because a phosphodiester bond consists of only one phosphate and 2 sugar molecules.
After that 3'end processing occurs in which RNAase II and RNAase D remove extra nucleotide sequences at 3' end. CCA is added at 3' end later on with the help of enzyme named as tRNA nucleotidyltransferase.
So, there is no role of splicesomes only RNAases and other enzymes are involved in tRNA processing.
Final answer:
The false statement about tRNA is that functional tRNAs have been spliced by spliceosomes. tRNA processing involves cleavage and modification, but not with spliceosomes, and this occurs before tRNAs are active in the cytoplasm for protein synthesis. So the correct option is D.
Explanation:
The correct answer to the question "Which of the following statements about tRNA is FALSE?" is D. Functional tRNAs have been spliced by spliceosomes. This statement is false because tRNA processing does not involve spliceosomes, which are specific to mRNA splicing. It is essential to note that, unlike mRNA, tRNA and rRNA are not translated but are involved in protein synthesis in other roles. In eukaryotes, tRNAs are transcribed and processed in the nucleus, but they undergo further processing that includes splicing, methylation, and sometimes nucleotide modification but not by spliceosomes. Following the processing, tRNAs are then exported to the cytoplasm.
tRNA molecules are typically depicted in a two-dimensional cloverleaf pattern, but in three dimensions, they adopt an L-like shape. The molecule is folded due to intramolecular base pairing, creating a structure with an anticodon at one end and an amino acid binding site at the other. Importantly, the anticodon of a tRNA is complementary to the mRNA codon, enabling the tRNA to bring the correct amino acid to the growing polypeptide chain during protein synthesis.
Learn more about tRNA processing,
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higher than
the normal healthy
body's result.
Why?
Answers
Athlete inhale high amount of energy s compared to normal healthy person.
The athlete's result will be higher than the normal healthy body's result for oxygen because athlete do hard activities which needs high amount of oxygen in order to release high amount of energy in the form of ATP. This energy is used by the body of athlete in their hard activities.
While on the other hand, the normal healthy person inhale less oxygen because he do normal activities and does not need high amount of energy for that activities so we can conclude that athlete inhale high amount of energy s compared to normal healthy person.
Learn more: brainly.com/question/18972023
Answer:
Explanation:Oxygen molecules absorbed by cells: The athlete's result will be
the normal healthy body's result.
Answers
Answer:
Centrosomes and Lysosomes
Explanation:
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, and other specialized plastids, and a large central vacuole, whereas animal cells do not.
Answers
Answer:
In the last 60 years, brown tree snakes have become the embodiment of the bad things that can happen when invasive species are introduced in places where they have few predators. Unchecked for many years, the snakes caused the extinction of nearly every native bird species on the Pacific island of Guam.
b) it is polar
c) it's evaporation helps regulate body temperature.
d) it is a relatively poor solvent
I'm thinking it's D. am I correct?