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A strain of Neurospora with the genotype HI is crossed with a strain with the genotype hi. Of the progeny, 50 % are HI and 50 % are hi. Describe how this is possible.
An organism has x pairs of chromosomes. This job then derives a common formula to express the number of types of gametic chromosomal combinations possible in this organism.
Predict the outcomes of the given crosses: a) Tall [dominant and homozygous] with dwarf - F1? b) Product of selfed F1.
Garden pea producing round seeds were crossed with such producing wrinkled seeds. The outcome was the production of 5474 round seeds and 1850 wrinkled seeds.
A white albino mouse was crossed with a wild grey colored one. The first generation mice were all grey. In the second generation, there were 198 grey and 72 albino mice.
White fruit color in summer squash is dependent on the dominant allele W and colored fruit on recessive allele w. In the presence of ww and a dominant gene G, the color of the fruit is yellow.
In squash, disc shaped fruit is dependent on the dominant gene D and elongated fruit on recessive allele d. Yellow color is controlled by the dominant gene R and green color by recessive allele r. S
Cross between pure red tomato and yellow tomato generated all red F1 progeny. From the F2 progeny of 400 plants, 90 were yellow. Hypothesize that a single pair of allele is comprised such that Y- =
An animal cell consists of 46 post-mitotic chromosomes in each of its somatic cells. Explain how many chromosomes must be present in the given cells:
Explain how would a scientist predict the relative frequencies in which the triplets are expected to form when the ribonucleotides form in a random linear array? Point out which amino acid(s) the tr
In a mutation experiment in drosophila, 45 mutations were detected amongst the 543 males which received 2500 Roentgens (R) and 67 mutations in 649 males which received 4000R. Determine the number of
A solution having 80 percent cytosine and 20 percent uracil was used to make synthetic RNAs. A bacterial cell free system produced proteins by using these mRNAs in the given proportions:
A double stranded DNA virus consists of 200,000 base pairs. Find out the number of nucleotides present and the total number of complete spirals. Explain how long will this DNA be?
Analysis of the base composition from DNA extraction in Aspergillus Niger was seen to have 37% cytosine. By using this data predict the percent of adenine.
What would be the genotypic and phenotypic ratio of the progeny of mating among the two cream colored pigs?
D1 and D2 is a pair of codominant alleles comprised in the inheritance of coat colors in horses. Genotypes homozygous for D1 produces chestnut [reddish], heterozygous genotypes palomino (golden colo
Whenever DNA is replicated in Eukaryotic cells, it gets shorter with each round of division due to the mechanics of DNA replication. Explain how do Eukaryotic cells prevent the loss of significant i
The Polymerase Chain Reaction (PCR), devised by the Kary Mullis in the mid-1980 has revolutionized molecular biology by permitting a whole new approach to the study and analysis of genes.
I have worked on this for two days and just have an opening statement that seems to pretty much sum up everything. I want to avoid unnecessary information however I feel I have limited resources.
Cleavage is an embryonic event which mainly comprises mitotic division. Explain how cleavage distinct from mitosis occurring during life after birth does, and what are its vital functions?
Cross a wild type female with a yellow bodied male to generate an f1 offspring generation. Which allele is dominant and which is recessive. Validate your response by using your results.
A man who consists of free earlobes marries a woman who has attached earlobes. What would be the expected phenotypes (and ratios or percentages) of off spring if the man were homozygous?
Explain how does an active infection take place in the urinary tract? Which factors in the urinary tract predispose humans toward the urinary tract infections?
State whether each is best viewed with the naked eye, light microscope, electron microscope and atomic force microscope;
I am having trouble explaining the virus genomes and the features of viral replication. I have read literature on it and tried comprehended the teacher's notes, however I want something more straigh