Deafness is an autosomal recessive disorder as the first generation is unaffected and the genotype of the fifth generation is AaBb.
Pedigree is a chart representation of the phenotype of specific genes of the organism and its inheritance from the ancestral family. The pedigree can be used for the analysis of the heritable disease and illness in the family root.
The deafness illness in the pedigree is recessive as the first generation of the pedigree remains unaffected but the later generation is affected and is diseased.
From the chart, deafness can be said to be an autosomalrecessive disorder as some generations are unaffected and in some the disease is present. More than one gene is controlling the disease as the fifth and sixth generations are affected but not their offspring.
The parent of the fifth generation are affected but their progenies are normal to know the genotype let's assume the genes A and B to be responsible for the disease and the mutation in any one of the alleles will result in deafness.
Hence, the genotype of the parents 5 and 6 in the fourth generation will be AAbb and aaBB as both of them diseased or deaf, the offsprings produced from their cross will be AaBb that is all the offspring of the fifth generation will be normal and unaffected.
Therefore, the genotype of the fifth generation in the pedigree is AaBb.
Learn more about pedigree and autosomal recessive disorder here:
Answer:
According to the pedigree, It is clear that the F1 generation is not affected but their offspring are affected in F2, which explains that the deafness presented with the pedigree is recessive. It should be an Autosomal recessive inheritance as it is found in both male and female offsprings.
As it is found that the parents are affected in 5th gen and 6th generation but their offspring are not affected which means there must be more than one genes controlled this disorder
B. In 5th generations mentioned above offspring is unaffected but parents are affected, to find the genotype of the individual let assume there are two genes responsible for it A and B, and mutation in any one of them can result in deafness.
So in IV generation Individuals 5 and 6 have genotypeAAbb and aaBB; both are deaf.
gametes:- Ab & aB.
So, the genotype of all offsprings will be AaBb means all are normal.
Answer:
The post-transcriptional modifications in the mRNA produced as a result of the transcription in eukaryotes provide many advantages to the mRNA.
The two post-transcriptional modifications are the addition of 7-methylguanosine cap at 5' end of mRNA called capping whereas the addition of the poly(Adenyl) tail at 3' end called tailing.
The advantages of capping are:
1. Protection of nascent mRNA from the degradation.
2. Recognition by transcription factors helps in translation.
The advantages of tailing are:
1. Protection of the mRNA from enzymatic degradation in the cytosol.
2. Transcription termination
3. Export of the mRNA from the nucleus
Answer:
Repetition
Explanation:
In science, the act of performing an experiment several times is called repetition. This involves obtaining multiple trials of an experiment in order to ensure accuracy and precision.
Multiple trials ensures that the best result which eliminates errors represents the findings.
Repetition gives a pool of important statistics to work with which can raise the confidence limit and provide more representation.
Answer:
repition
Explanation:
Which statement is most supportive of the claim that genetic diversity is an advantage of sexual reproduction?
Genetic variation from sexual reproduction ensures that at least some individuals will have advantageous traits that help them survive.
Asexual reproduction results in the same genes being copied, which means the same vulnerabilities in the population.*******
Sexual reproduction creates genetic diversity, which results in a wide range of appearances in a population.
Lack of genetic diversity from asexual reproduction results in a diminished ability to survive changes to the environment.
What is the most likely explanation for a child exhibiting a heritable trait that neither parent exhibits?
The trait was passed on by a different biological parent, and one of the child's parents is not biologically related.
The trait was inherited from a more distant relative, like a great-grandparent.
The parents carried a second trait that masked the trait of interest.
The trait is recessive, so both parents carry it, and the child inherited each recessive allele.**********
Which statement has exceptions?
Sexual reproduction requires two parents, whereas asexual reproduction requires only one parent.
Sexual reproduction produces genetic variation, but asexual reproduction does not.
Sexual reproduction is more complex, while asexual reproduction is a simpler process.
Sexual reproduction involves parental care, while asexual reproduction does not.******
Assume a bacterial cell failed to replicate its DNA before it reproduced two daughter cells. The reproduction would result in
neither cell containing DNA.
both cells containing DNA.
one cell with DNA and one cell without DNA.*******
one cell with DNA and one cell with two sets of DNA.
A parent bacterial cell is able to survive in the presence of the antibiotic penicillin. Subsequent generations from this parent will be _______ penicillin.(1 point)
resistant to*****
killed by
dependent on
vulnerable to
Hydras are animals related to coral and jellyfish. Hydras can reproduce sexually or asexually. Why would hydras avoid reproducing asexually when conditions are difficult?
The lack of genetic diversity could mean that all of the hydras die, depending on the situation. ******
The high genetic diversity could mean that all of the hydras die, depending on the situation.
Reproducing more rapidly would be a good way to take advantage of plentiful resources.
Reproducing more slowly would be a good way to take advantage of plentiful resources.
Sexual reproduction creates genetic diversity, allowing some individuals to have advantageous traits. Inheriting a trait that neither parent exhibits suggests it is recessive and both parents carry it. Hydras avoid asexual reproduction when conditions are difficult to prevent a lack of genetic diversity.
The statement that is most supportive of the claim that genetic diversity is an advantage of sexual reproduction is: Genetic variation from sexual reproduction ensures that at least some individuals will have advantageous traits that help them survive. Sexual reproduction creates unique combinations of genetic material through the process of fertilization, resulting in offspring with diverse traits. This genetic diversity increases the likelihood of individuals having advantageous traits that can help them adapt and survive in changing environments.
In the case of a child exhibiting a heritable trait that neither parent exhibits, the most likely explanation is that the trait is recessive and both parents carry it. This means that the child inherited two copies of the recessive allele, one from each parent, which is necessary for the trait to be expressed.
Hydras, despite being capable of reproducing asexually, would avoid doing so when conditions are difficult because asexual reproduction does not create genetic diversity. Without genetic diversity, all hydras in the population would have the same traits, making them vulnerable to changes in the environment.
#SPJ11
Answer:
RNA was the genetic material
Explanation:
If avary, Macleod, and McCarty would have seen that only RNAse treatment of the heat-killed bacteria prevented the transformation of genetic virulence than might have concluded that RNA is the genetic material as transformation does not occur because the RNAase degraded the RNA.
But if the genetic material is DNA then RNAase will not work because RNAase can not degrade DNA and then DNA will pass from virulent heat killed strain to nonvirulent strain and will cause transformation.
Answer:
There are two mitosis and meiosis.
B.Blastocyst
C.morula
D.Blastocoel
Ans.
Embryogenesis or embryonic development is defined as a process that involves formation and development of a zygote into embryo. The fertilized egg or zygote undergoes mitotic divisions through cleavage and divides rapidly.
The first stage of embryonic development is known as morula that represents a 16 cells consisting solid ball-like structure. The morula later develops into blastula.
Thus, the correct answer is option C). 'morula.'