The Guinea pig having the genotype BbRr is heterozygous for both the loci.
WBBSE
Class X
Life Science
03 (a) Heredity
1 Marks
2024
True.
Explanation:
An organism is said to be heterozygous at a gene locus when it has two different alleles for that gene. The genotype BbRr means the Guinea pig has one dominant allele (B) and one recessive allele (b) for one gene, and one dominant allele (R) and one recessive allele (r) for another gene, making it heterozygous at both loci.
Related Questions
More WBBSE Easy level questions
1/12
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 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.
Write an example of a proteolytic enzyme.
A.
Trypsin is an example of a proteolytic enzyme. Explanation: Proteolytic enzymes help...
Q.
Give an example of an ornithophilous (bird-pollinated) flower.
A.
Example – Shimul or Mango. Explanation: Ornithophilous flowers are pollinated by birds...
Q.
Write one function of collenchyma tissue
A.
Collenchyma tissue provides mechanical support and elasticity to plant organs. Explanation: The...
Q.
What is the function of lysosome?
A.
Lysosome helps in intracellular digestion by containing digestive enzymes. Explanation: Lysosomes act...
Q.
Write one feature of connective tissue.
A.
Connective tissue connects different tissues and organs of the body and provides...
Q.
With the help of an example explain how the phenotypic and genotypic ratios found in...
A.
In the case of incomplete dominance, such as flower colour in Mirabilis...
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)...