Question

Помогите, очень нужно) Задача 1. Какая часть потомства от самоопыления гибрида АаВвДдСС будет рецессивна по всем признакам? Задача 2. Какая часть потомства от самоопыления гибрида АаВвДдСС будет доминантна по всем признакам? Задача 3. Какая часть потомства от самоопыления гибрида АаВвее будет гетерозиготна по всем генам? Задача 4. Какая часть потомства от самоопыления гибрида ааВвДДЕе будет рецессивна по первому и доминантна по остальным признакам? Задача 5. Какая часть потомства от самоопыления гибрида АаВвДДЕе будет гомозиготна, доминантна по третьему гену, рецессивна по четвертому гену и гетерозиготна по остальным?

Answer 1

1.часть

2.часть 8
3.часть5
4.
5.

Answer 2

Task 1: Which part of the offspring from self-pollination of the hybrid AaBbCcDdSs will be recessive for all traits?

To determine which part of the offspring from self-pollination of the hybrid AaBbCcDdSs will be recessive for all traits, we need to understand the principles of inheritance and the concept of dominance and recessiveness.

In genetics, dominant traits are expressed when at least one copy of the dominant allele is present, while recessive traits are only expressed when two copies of the recessive allele are present.

For each trait in the hybrid AaBbCcDdSs, we need to determine the genotype and phenotype of the offspring resulting from self-pollination.

However, since the specific traits and their corresponding alleles are not provided in the question, it is not possible to determine which part of the offspring will be recessive for all traits without additional information.

Please provide more details about the specific traits and alleles involved, and I will be happy to help you further.

Task 2: Which part of the offspring from self-pollination of the hybrid AaBbCcDdSs will be dominant for all traits?

Similar to the previous question, to determine which part of the offspring from self-pollination of the hybrid AaBbCcDdSs will be dominant for all traits, we need more information about the specific traits and alleles involved.

Without knowing the specific traits and alleles, it is not possible to determine which part of the offspring will be dominant for all traits.

Please provide more details about the specific traits and alleles, and I will be happy to assist you further.

Task 3: Which part of the offspring from self-pollination of the hybrid AaBbee will be heterozygous for all genes?

To determine which part of the offspring from self-pollination of the hybrid AaBbee will be heterozygous for all genes, we need to understand the principles of inheritance and the concept of heterozygosity.

Heterozygosity refers to having two different alleles for a particular gene. In this case, we need to consider the genes A, B, and e.

Since the hybrid AaBbee has two different alleles for the genes A and B, all the offspring resulting from self-pollination will inherit one copy of each allele from the parent.

Therefore, all the offspring from self-pollination of the hybrid AaBbee will be heterozygous for all genes (AaBbEe).

Task 4: Which part of the offspring from self-pollination of the hybrid aabbDDEe will be recessive for the first trait and dominant for the remaining traits?

To determine which part of the offspring from self-pollination of the hybrid aabbDDEe will be recessive for the first trait and dominant for the remaining traits, we need to understand the principles of inheritance and the concept of dominance and recessiveness.

In this case, we need to consider the traits and alleles involved. The hybrid has the following alleles: aa for the first trait, bb for the second trait, DD for the third trait, and Ee for the fourth trait.

Since the first trait is determined by the recessive allele "a," the offspring will be recessive for the first trait only if they inherit two copies of the recessive allele "a." Therefore, 25% of the offspring will be recessive for the first trait (aa).

For the remaining traits, the offspring will be dominant if they inherit at least one copy of the dominant allele. Since the hybrid has the dominant alleles "b," "D," and "Ee" for the second, third, and fourth traits, respectively, the remaining 75% of the offspring will be dominant for the second, third, and fourth traits (BbDDEe).

Task 5: Which part of the offspring from self-pollination of the hybrid AaBbCcDDEe will be homozygous, dominant for the third gene, recessive for the fourth gene, and heterozygous for the remaining genes?

To determine which part of the offspring from self-pollination of the hybrid AaBbCcDDEe will have the specified genotype, we need to consider the principles of inheritance and the concept of homozygosity, dominance, and recessiveness.

In this case, we need to consider the genes involved. The hybrid has the following alleles: Aa for the first gene, Bb for the second gene, Cc for the third gene, DD for the fourth gene, and Ee for the fifth gene.

To be homozygous for the third gene, the offspring must inherit two copies of the same allele. Since the hybrid has the heterozygous alleles "Cc" for the third gene, none of the offspring will be homozygous for the third gene.

To be dominant for the third gene, the offspring must inherit at least one copy of the dominant allele "C." Since the hybrid has the dominant allele "C" for the third gene, all the offspring will be dominant for the third gene.

To be recessive for the fourth gene, the offspring must inherit two copies of the recessive allele "D." Since the hybrid has the dominant allele "D" for the fourth gene, none of the offspring will be recessive for the fourth gene.

To be heterozygous for the remaining genes, the offspring must inherit two different alleles for each gene. Since the hybrid has the heterozygous alleles for the remaining genes (AaBbEe), all the offspring will be heterozygous for the remaining genes.

In summary, from self-pollination of the hybrid AaBbCcDDEe, none of the offspring will be homozygous for the third gene, all the offspring will be dominant for the third gene, none of the offspring will be recessive for the fourth gene, and all the offspring will be heterozygous for the remaining genes.