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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.
APPEARS IN
संबंधित प्रश्न
Describe quantitative inheritance controlled by two pairs of genes.
State the three Mendel’s laws of inheritance.
Choose the correct answer:
Mendel conducted his hybridization experiments on _______
The 9 : 3 : 3 : 1 dihybrid ratio is due to ______.
Describe the cross between a homozygous tall, round-seeded pea plant and a dwarf, wrinkled-seeded pea plant. What will be the types of progeny in the F2 generation of this cross and in what proportion will it be?
Name and state the law which is explained by this example.
Complete the following sentence with appropriate word:
___________ is the Father of Genetics.
Give the pair of contrasting traits of the following characters in the pea plant and mention which is dominant and recessive
- yellow seed
- round seed
The F1 generation has all tall, and F2 ratio 3 : 1, it proves:
Mendel blended his knowledge of science and mathematics to keep count of the individuals exhibiting a particular trait in each generation. He observed a number of contrasting visible characters controlled in pea plants in a field. He conducted many experiments to arrive at the laws of inheritance.
- What do the F1 progeny of tall plants with round seeds and short plants with wrinkled seeds look like?
- Name the recessive traits in the above case.
- Mention the type of the new combinations of plants obtained in F2 progeny along with their ratio, if F1 progeny was allowed to self-pollinate.
OR
If 1600 plants were obtained in F2 progeny, write the number of plants having traits:
- Tall with round seeds.
- Short with wrinkled seeds.
Write the conclusion of the above experiment.
