Practice free Hereditary and Variation (Botany) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
A test cross is carried out to AIPMT - 2012
A test cross is carried out to determine the genotype of a plant at the F1 generation. By crossing the F1 organism with a homozygous recessive individual, the resulting offspring can reveal whether the F1 organism is homozygous dominant or heterozygous.
A cross between AaBB X aaBB yields a genotypic ratio of AIPMT - 1990
The cross between AaBB and aaBB involves a single gene pair (Aa x aa) with another gene pair being homozygous dominant (BB). The resulting genotypic ratio will be 1 AaBB : 1 aaBB. This means that half of the offspring will inherit the dominant 'A' allele and the other half will inherit the recessive 'a' allele, while all will inherit the dominant 'B' allele.
In a cross between a pure tall plant with green pod and a pure short plant with yellow pod. How many short plants are produced in Fd2d generation out of 16? AIPMT - 94
A wrinkled, pure yellow seeded pea plant is crossed with pure round, green seeded pea plant. Calculate the percentage of progeny with wrinkled green seeds.
The allele which is unable to express its effect in the presence of another is called AIPMT - 1991
A recessive allele is one that is unable to express its effect in the presence of a dominant allele. In other words, the effect of a recessive allele is masked by the presence of a dominant allele. This is a fundamental concept in Mendelian genetics.
Which of the following disorder is not hereditary (J.K.C.M.E.E 2005)
A cataract is a clouding of the eye's lens and is not hereditary. It can be caused by aging, injury, or other conditions, but it is not passed down from parents to offspring like sickle cell anemia, hemophilia, or color blindness.
One of the Mendel's pure strains of pea plants had green peas. How many different types of eggs could such a plant produce with regard to pea color?
The pure strain is homozygous.
A woman receives her X chromosomes from:
Women have 2 X chromosomes, one comes father and the other from her mother.
The mechanism that causes a gene to move from one linkage group to another is called
Translocation is the process causing a gene to move from one linkage group to another. It is the separation of a chromosome segment and its union to a non-homologous chromosome. It is of two types - Simple and reciprocal.
In simple translocation one chromosome shows deletion of deficiency while a non-homologous chromosome comes to have an additional segment. In reciprocal translocation two non-homologous chromosomes exchange segments between themselves to create new linkage groups in both the chromosomes.
Hence, option is correct.
A true breeding plant is
(c) A true breeding plant (pureline) has homozygous genes for a character (e.g., TT for tall or tt for dwarf). It always produces offsprings which are true (pure) for its characters.
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