Test cross?

Read the given statements and select the correct option Statement 1 : Test cross is used to determine an unknown genotype within one breeding generation Statement 2 : Test cross is a cross between F_(1) hybrid and dominant parent.

Refer the given statements (i) Incomplete or mosaic inheritance is an example of pre-Mendelian concept of blending inheritance (ii) Test cross is a special type of back cross (iii) Chromosomal aberrations are commonly observed in cancer cells (iv) Thalassaemia is a Mendelian disorder Which of the above statements are correct ?

Read the following statements and chosse the correct option. (a) Test cross for completely linked genes shows recombinanats of more than 50% (b) The type of phenotypes produces by two comletly linked genes is always greater than two

Match column I with column II and select the correct option from the given codes {:(,"Column I",,"Column II"),("A.","Multiple allelism","(i)","Tt" xx "tt"),("B.","Back cross","(ii)","Tr" xx "TT"),("C.","Test cross","(iii)","Human blood groups"),("D.","Crossing over","(iv)","Non-parental gene combination"),("E.","Recombination","(v)","Non-sister chromatids"):}

Which of the folloiwng statement/s about test cross is/are correct? I. Every test cross is a back cross, but not every back cross is a test cross. II. Every back cross is a test cross but not every test cross is a back cross. III. The ratio of a test cross is always 1:1. IV. A test cross can be considered as a type of reciprocal cross.

Individuals homozygous for ab genes were crossed with wild type (++). The F_(1) hybrid thus produced was test crossed. It produces progeny in following proportion. Now, calculate the distance between a and b genes.

The following results are obtained in several dihybrid test crosses in an organism considering three genes loci Aa,Bb and Cc. a. In test cross with AaBb the number of recombinants and parental combinations are 50 and 950 respectively. b. In TC with AaCc the number of Rc and PC are 75 and 425 respectively. c. In TC with BbCc the number of RC and PC are 160 and 640 respectively. basing on the above result identify the gene loci of the three genes /prepare a genetic map of the three genes.

A homozygous sweet pea plant with blue flowers (RR) and long pollen (R_0R_0) is crossed with a homozygous plant having red flowers (rr) and round pollen (r_0r_0) . The resultant F_1 hybrid is test crossed. Which of the following genotype does not appear in its progeny?

Find correct number of statement (s) w.r.t test cross. (i) It s cross between dominant unknown genotype and recessive parent. (ii) It is cross between the progeny of F1 generation and recessive parent. (iii) To determine the genotype of a tall pea plant at F2 generation (iv) to find out the genotype of dwarf pea plant in F22 generation

Match column I with column II and select the correct option from the given codes {:(,"Column I",,"Column II"),("A.","Dihybrid test cross","(i)",9:3:3:1),("B.","Law of segregation","(ii)","Dihybrid cross"),("C.","Lawof independent assortment","(iii)",1:1:1:1),("D.","ABO blood group in man","(iv)","Purity of gametes"),(,,"(v)","Multiple allelism"):}