Heredity and evolution Worksheet-9

Heredity and evolution Worksheet-9

 

  1. In Mendel’s first experiment of monohybrid cross, plants obtained in F1 generation were:

A. Homozygous dominant

B. Homozygous recessive

C. Heterozygous

D. Homozygous as well as heterozygous

 

  1. If the genotype for certain trait is Ttrr, how many types of gametes will be produced?

A. one                 B. Two                C. Three             D. Four

 

  1. If a plant with genotype ‘rr’ is crossed with another plant with genotype ‘RR’, then offsprings will have genotype:

A. RR                  B. rr                    C. Rr                   D. All of these

 

  1. Consider that smooth surface and yellow colour of pods in pea plant are dominant traits and denoted with letters ‘S’ and ‘Y’ respectively while constricted pod with green color is recessive trait denoted with letters ‘s’ and ‘y’ respectively. What will be the phenotype of the pod if the genotype is Ssyy?

A. Smooth and yellow                 B. Smooth and green

C. Constricted and yellow          D. Constricted and green

 

  1. If the genotype of parental plants having yellow seed color is YY and Yy, then genotypic ratio of F1 generation for the same trait is:

A. 3:1                  B. 1:1                   C. 1:2:1               D. None of these

 

  1. If in a diploid cell, genotype for certain trait is denoted with capital letters, then it suggests that the cell is:

A. Homozygous for dominant trait

B. Homozygous for recessive

C. Heterozygous

D. None of these

 

  1. Which of the following is not present in non dividing cell?

A. Chromatin    B. Genome        C. Gene              D. Chromosome

 

  1. Which of the following process results in formation of RNA?

A. Replication                               B. Recombination

C. Transcription                           D. Translation

 

  1. Which of the following organisms can change their sex after birth?

A. Clown fish    B. Turtles           C. Lizards          D. Crocodile

 

  1. Which of the following statement is not correct?

A. Human males are heterogametic

B. Human males have XY type of sex chromosome

C. Human males are dominant species

D. Sex of human beings depends on the gametes provided by males.

 

Answer Key:

  1. C
  2. B
  3. C
  4. B
  5. A
  6. A
  7. D
  8. C
  9. A
  10. C