The wrinkled shape of seed is a ____ trait.
WBBSE
Class X
Life Science
03 (a) Heredity
1 Marks
2023
Recessive
Explanation
Seed shape in pea plants is a hereditary trait controlled by a pair of alleles. The round shape is dominant over the wrinkled shape, making wrinkled seed a recessive trait. For a plant to have wrinkled seeds, it must have two recessive alleles for seed shape.
Related Questions
More WBBSE Easy level questions
1/12
Q.
In which of the following crosses, will the F1 generation seed’s tall and dwarf traits...
A.
(d) Tt x tt Explanation: When a heterozygous tall plant (Tt) is...
Q.
What will be the phenotypic ratio of progeny obtained from the hybridization between YyRR and...
A.
(c) 2:2
Q.
If a population undergoes three generations, and if each generation consists of only males, what...
A.
0% Explanation: If all generations consist only of males, there is no...
Q.
With the help of a checkerboard show the phenotypic ratio of offsprings produced inF2 generation...
A.
YR Yr yR yr YR YYRR (Yellow round) YYRr (Yellow round) YyRR...
Q.
Explain the following two terms related with heredity — (a) Allele (b) Locus
A.
(a) Allele: Alleles are different forms of the same gene that occupy...
Q.
In DNA, which of the following base pairs is correct? (a) A—T (b) A—T (c)...
A.
(a) A—T Explanation: According to base pairing rules in DNA, adenine (A)...
Q.
Compare the steps of mitosis in plant cells and animal cells and select which are...
A.
(b) II, IV Explanation: In plant cells, cytokinesis happens by cell plate...
Q.
Which of the following statements is NOT correct? (a) Fibrin helps in blood clotting. (b)...
A.
(c) Insulin increases the level of glucose in blood. Explanation: According to...
Q.
Which one of the following is an incorrect food chain? (a) Grass → Rabbit →...
A.
(c) Grass → Cow → Man → Tiger Explanation: A correct food...
Q.
Which of the following is not an example of mutualism? (a) Man and intestinal bacteria...
A.
(b) Water hyacinth and fish Explanation: Mutualism is a relationship in which...
Q.
Which of the following statements about self-pollination is correct?
A.
Self-pollination occurs within the same flower. Explanation: According to textbook definition, self-pollination...
Q.
Among nitrobacter, rhizobium, nitrosomonas, nitrite bacteria, pseudomonas — which one is found in the fourth...
A.
(d) Pseudomonas Explanation: The fourth phase of the nitrogen cycle is denitrification,...