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Broad palm with single palm crease is visible in a person suffering from-
In a test cross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant type offspring. This indicates:
Which of the following pairs is wrongly matched?
Assuming that fur colour of an animal ranges from dark, intermediates shades, to white. A cross is made between a male (AABBCC) with dark fur colour and a female (aabbcc) with white fur colour. What would be the fur colour of F1 generation?
In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of black seed plant, with which of the following genotype will you cross it?
A cross in which an organism showing a dominant phenotype is crossed with the recessive parent in order to know its genotype is called:
Which of the following is not a hereditary disease:
Which of the following most appropriately describes haemophilia?
A pink flowered Snapdragon plant was crossed with red flowered Snapdragon plant. What type of phenotype/s is/are expected in the progeny?
Which one of the following traits of garden peas studied by Mendel was a recessive feature?
Which of the following is NOT an autosomal recessive disorder?
A true statement for Ulothrix:
What change occurs by changing one base in DNA?
The genotype of a plant showing the dominant phenotype can be determined by:
Given below are two statements: Statement I: When many alleles of a single gene govern a character, it is called polygenic inheritance. Statement II: In polygenic inheritance, the effect of each allele is additive. In the light of the above statements, choose the correct answer from the options given below:
Name the enzyme that facilitates opening of DNA helix during transcription.
The mother has A+ blood group, the father has B+ and the child is A+. What can be possible genotypes of all three, respectively?
A cell at the telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at the telophase stage. There is no formation of a cell plate and thus the cell is containing more chromosomes as compared to other dividing cells. This would result in:
ABO blood groups in humans are controlled by the gene I. It has three alleles – , and . How many phenotypes are possible?
A woman with 47 chromosomes, due to three copies of chromosome 21, is characterized by: