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प्रश्न
Explain the following term : Homozygous
उत्तर
Homozygous:
The condition in which a pair of homologous chromosomes carries similar alleles for a particular character.
For example -
(i) A colorblind daughter (XoXo) will have both the X chromosomes with defective alleles.
(ii) A non-roller will have rr (homozygous) genotype.
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संबंधित प्रश्न
What is Neo-Mendelian genetics?
State the three Mendel’s laws of inheritance.
Define the following:
Heterozygous
Choose the correct answer:
The allele which masks the effect of its complement is _______
Which one of the following characters studied by Mendel in garden pea was found to be dominant?
Two pea plants one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds produce F1 progeny that have round, yellow (RrYy) seeds. When F1 plants are selfed, the F2 progeny will have new combination of characters. Choose the new combination from the following:
- Round, yellow
- Round, green
- Wrinkled, yellow
- Wrinkled, green
Read the following and answer from given below:
According to Mendel, one gene controls the expression of one character only. The ability of a gene to have multiple phenotypic effects because it influences a number of characters are an exception. The gene has multiple phenotypic effects because its ability to control two or more characters can be seen in cotton. In cotton, a gene for the lint also influences the height of the plant, size of the ball, number of ovules, and viability of seeds.
Genes with multiple phenotypic effects are known as ______
In Mendel's experiments, colour of seed coat, nature of flower, position of flower, colour of pod, height of stem, are called
A person has to perform crosses for the purpose of studying inheritance of a few traits/characters. What should be the criteria for selecting the organisms?
In order to obtain the F1 generation Mendel pollinated a pure-breeding tall plant with a pure breeding dwarf plant. But for getting the F2 generation, he simply self-pollinated the tall F1 plants. Why?
