English
Tamil Nadu Board of Secondary EducationHSC Science Class 12

Test cross involves - Botany

Advertisements
Advertisements

Question

Test cross involves

Options

  • Crossing between two genotypes with recessive trait

  • Crossing between two F1 hybrids

  • Crossing the F1 hybrid with a double recessive genotype

  • Crossing between two genotypes with dominant trait

MCQ

Solution

Crossing the F1 hybrid with a double recessive genotype

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Classical Genetics - Evaluation [Page 52]

APPEARS IN

Samacheer Kalvi Botany [English] Class 12 TN Board
Chapter 2 Classical Genetics
Evaluation | Q 6 | Page 52
Samacheer Kalvi Biology (Botany) [English] Class 12 TN Board
Chapter 2 Classical Genetics
Evaluation | Q 6 | Page 47

RELATED QUESTIONS

Filling the blank based on the given relationship.

3 : 1 Monohybrid : : 9 : 3 : 3 : 1 : ______


Explain Mendel’s dihybrid ratio with the help of any one cross.


Explain dihybrid cross.

A homozygous Tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous dwarf plant (t) bearing white flowers (r):
(1) Give the Genotype and Phenotype of the F2 generation.
(2) Give the possible combinations of the gametes that can be obtained from the F2 hybrid.
(3) Give the dihybrid ratio and the phenotype of the offsprings of the F2 generation when two plants of the F1 generation above are crossed.


Explain with an example the inheritance of the dihybrid cross. How is it different from monohybrid cross?


Select the correct statement from the ones given below with respect to dihydrid cross


In a test cross involving F1 dihybrid flies, more parental type offspring were produced than the recombination type offspring. This indicates


Define Genetics.


A cross between two tall plants resulted in offspring having few dwarf plants. What would be the genotypes of both the parents?


In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that ______.


Two linked genes a and b show 20% recombination. The individuals of a dihybrid cross between ++ /++ × ab/ab shall show gametes ______.


Mendel’s last law is ______.


In a dihybrid cross, F2 phenotypic ratio is 13 : 3. It is case of ______.


Two genes ‘A’ and ‘B’ are linked. In a dihybrid cross involving these two genes, the F1 heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation?


Assertion: When the two genes in a dihybrid cross are situated on the same chromosome, the proportion of parental gene combinations is much higher than the nonparental type.

Reason: Higher parental gene combinations can be attributed to crossing over between two genes.


From the list given below, select the character which can be acquired but not inherited


Do genetic combination of mothers play a significant role in determining the sex of a new born?


Sahil performed an experiment to study the inheritance pattern of genes. He crossed tall pea plants (TT) with short pea plants (tt) and obtained all tall plants in F1 generation.

What will be set of genes present in the F1 generation?


Sahil performed an experiment to study the inheritance pattern of genes. He crossed tall pea plants (TT) with short pea plants (tt) and obtained all tall plants in F1 generation.

When F1 plants were cross-pollinated with plants having tt genes, a total of 800 plants were produced. How many of these would be tall, medium height or short plants? Give the genotype of F2 generation.


Mendel's law of independent assortment is based on F2 ratio of:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×