Statistical Methods I

If the correlation coefficient between body weight of full sibs is 0.25, then the heritability of this trait in this population is

What is a common application of bioinformatics in personalized medicine?

Given below are two statements regarding protein structure prediction methods

In light of the above statements, choose the most appropriate answer from the options given below.

The base sunflower population has a mean of 100 days to flowering. Two parents were selected that had a mean of 90 days to flowering. The quantitative trait ‘days to flowering’ has a heritability of 0.2. Then the mean of a population derived from crossing these two parents is

Body weight of rabbits is determined by pairs of alleles at two loci that are additive and equal in their effects. Rabbits with genotype aabb have average 1 kg body weight, whereas individuals with genotype AABB have animals that average 3.4 kg in weight. A male rabbit with aabb is crossed with a female of genotype AABB. Then the predicted average weight of F1 progeny of this cross is

Consider the causal path diagram where $X$ is the dependent effect and $A, B, C, D$ are causes such that $X = A + B$ and $A = C + D$, with $A, B$ independent and $C, D$ independent. Consider the statements:

Choose the correct answer from the options given below:

At what allelic frequency is the heterozygous genotype (Aa) twice as frequent as the homozygous genotype (aa) in a Hardy- Weinberg population?

The term "phylogenetic tree” is used in:

Consider the following terminologies used in phylogenetic analysis

Choose the correct answer from the options given below:

The number of possible unrooted trees for 5 operational taxonomic units is

In a particular study, a random sample (assumed to have been taken from a population which follow Normal distribution) was taken. If the sample size was 50, then the standard error of sample mean obtained was found to be 8 units. How much would be the standard error, if the sample size was increased to 200 (assuming that the standard deviation of the sample observations did not change)?

Suppose that the recessive individuals (‘aa’, like lethal or sterile genes) of a large random mating population are intended to be entirely eliminated from the population and that only the dominants are allowed to mate and reproduce. The zygotic proportions of the various genotypes (AA, Aa, aa) in the population before such a selection (against recessives) are given as (p2, 2pq, a2) respectively. The frequency of ‘A’ after such a selection in the next generation is

Let the frequency of a particular allele in the donor and the recipient populations, in some initial generation, be pg and Po respectively. Also suppose that a proportion 'm’ of the genes in the recipient population are replaced in every generation by immigrants. Assuming random mating within the recipient population, the difference in the gene frequency between the donor and recepient populations after one generation of migration is

Ifan individual of genotype AaBbCcDd is testcrossed, how many different phenotypes can appear in the progeny?

The central dogma of molecular biology states that

In bioinformatics, the term "homology" refers to:

If a plant with genotype $AaBb$ is self-pollinated, where alleles $A$ and $B$ are not linked, then the probability of getting $AABB$ genotype in the progeny will be:

Ahetero red eyed female was crossed with a red eyed male. The results are: Red eye observed: 120; White eye observed 80. Red eyes are sex-linked dominant to white. Then, for performing goodness of ft test, the calculated Chi-square value is