Which of the following statemen s are true a Morgan traced t

Which of the following statemen (s) are true? a. Morgan traced the eye colour gene in flies to the X chromosome. b 50% recombinant progeny are observed for two unlinked genes, which is due to the independent assortment of homologous chromosomes in metaphase l. o c. In very long chromosomes 50% recombination can be observed. d. Crossing over between homologous, parental chromosomes is the mechanism of breaking up linkage of two genes to form recombinant chromosomes. o e. The frequency of recombination is directly proportional to the distance between the two linked loci as the chance of crossing over is equal on all points of the chromosome o All of the above g. All but C O h. A and D

Solution

1.Which of the following statements are true?

The correct answer is : h . A and D

Reason:The above statements are true in genetics.

2.Match:

Wild type: E.

Parental phenotype : C

Recombinant phenotype : B

Linked genes :A

Sex linked :D

3.

Test cross: B

Monohybrid cross: C

Dihybrid cross: D

4.Which of the following are examples of the term phenotype?

The correct answers are : a and e

Reason:Phenotype refers to the observed charateristics and in this case it is black and purple color.

5.Which of the following are descriptions of the term allele?

The correct answers are : b and c

Reason:Alleles refers to alternate forms of a gene presenr on same locus on the chromosome.

6.Match:

Allele : E

Gene: F

Homozygous :A

Heterozygous :C

Phenotype: B

Genotype: D