Please answer all the questions Define 1 Syntenic genes 2 N

Please answer all the questions

Define

1. Syntenic genes –

2. Null hypothesis –

Fill in the Blank

3. The statistical test used to measure “goodness of fit” between observed and expected values is known as _________________________________.   

4. Recombination frequencies (R.F.) can be used to calculate the distance between genes with 1 R.F. equaling _______________________.

True or False

5. Genes are considered linked when the R.F. < 50%.

6. Genes are considered unlinked when the number of offspring in the parental groups equals the number of offspring in the recombinant groups.

Short Answer

7. In Drosophila, genes g and o are recessive, X-linked alleles. The wild type alleles are g+ and o+. A female homozygous for g and o+ is crossed to a g+ o male. The F1 flies are interbred. The F2 males are distributed as follows. Determine the distances between the X-linked genes and tell whether they are linked or not.

g o

20

g o⁺

40

g⁺ o

31

g⁺ o⁺

9

8. Suppose a three-point testcross was conducted involving the genes A, B, and C. If the most abundant classes are Abc and abC and the rarest classes are aBC and ABc, which gene is in the middle? How do you know?

Solution

1. Syntenic gene:

The relationship between two genetic loci (not genes) spoke to on the same chromosomal match or (for haploid chromosomes) on a similar chromosome; an anatomic instead of a segregational relationship.

2. Null hypothesis:

A null hypothesis is a hypothesis that says there is no statistical significance between the two variables in the hypothesis. The hypothesis the researcher is attempting to refute. In the case, Susie\'s null hypothesis would be something like this: There is no statistically critical relationship between the sort of water I nourish the blossoms and development of the blooms. A researcher is tested by the null hypothesis and for the most part needs to invalidate it, to exhibit that there is a statistically huge relationship between the two variables in the hypothesis.

3. Chi-square value

4. Genetic linkage

5.True

6. False