What is a linked gene pool?


Non allele genes located on the same chromosome segregate together during meiosis to form a group of linked genes

The answer to choose is: b

Given two pairs of non-allelic genes located on the same chromosome pair, which of the following genotypes would be written?are notcorrect?

When giving yellow flower peas, the straight wing is crossed with purple flower pea, the rolled wing is obtained F1100% of purple flower pea, straight wing. For F1 to cross-pollinate with each other to obtain F2 including 105 yellow-flowered beans, straight wings, 210 purple-flowered beans, straight wings, 100 purple-flowered beans, and rolled petals. Know that each gene determines a trait. Which the following comment is true?

When giving yellow flower peas, the straight wing was crossed with purple flower pea, the rolled wing obtained F1 100% purple flower pea, straight wing. For F1 to cross-pollinate with each other to obtain F2 including 105 yellow-flowered beans, straight wings, 210 purple-flowered beans, straight wings, 100 purple-flowered beans, and rolled petals. Know that each gene determines a trait. Which of the following is incorrect?

Genotype $rmAaBBfracDEde$ will produce how many gametes if the genes are fully linked?

Given 3 spermatogenic cells with genotype $fracABab$ perform meiosis, know that meiosis is completely normal, no mutations occur, genes are fully linked. What is the number of gametes that can be produced?

For 4 spermatogenic cells with genotype $fracDEde$ to undergo meiosis, knowing that the process of meiosis is completely normal, no translocation of genes occurs. What is the minimum and maximum number of gametes that can be produced?

Let’s hybrid P: $fracABab$ × $fracaBab$. Know the linked genes completely. Theoretically, the number of genotypes in F1 would be

Let’s hybrid P: $fracABab$ × $fracaBab$. Know the fully linked genes. Theoretically, the number of phenotypes in F1 would be

In a plant species, gene A regulates tall stem, gene a regulates short stem; gene B regulates round fruit, gene b regulates long fruit; These genes are located on the same autosome. Let P: (fracABab) × (fracAbaB). Know the linked genes completely. Theoretically, the number of phenotypes obtained in F1 would be

In a plant species, gene A regulates tall stem, gene a regulates short stem; gene B regulates round fruit, gene b regulates long fruit; These genes are located on the same autosome. Let P: (fracAbaB) × (fracabab). Know the linked genes completely. Theoretically, the phenotypic ratio in F1 would be

An individual produces 4 types of gametes, including gametes bd rm Accounting for 25%. What is the genotype of this individual and how many types of gametes does it produce?

An individual produces 4 types of gametes, including gametes bD rM Accounting for 25%. What is the genotype of this individual and how many types of gametes does it produce?

An organism with 3 genes I, II and III has 2 alleles, respectively; 3 and 4. Calculate the maximum number of possible genotypes of the species in the case: Gen I and II are on the same pair of autosomes, gene III is on another pair of autosomes

An organism with 3 genes I, II and III has 2 alleles, respectively; 3 and 5. Calculate the maximum number of possible genotypes of the species in the case: Gen I and II are on the same pair of autosomes, gene III is on another pair of autosomes

An organism with 3 genes I, II and III has 2 alleles, respectively; 3 and 4. Calculate the maximum number of possible genotypes of the species in case the 3 genes above are on 1 pair of autosomes.

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An organism with 3 genes I, II and III has 2 alleles, respectively; 2 and 4. Calculate the maximum number of possible genotypes of the species in the case: 3 genes above are on 1 pair of autosomes.

For the following hybrids:

(1) Ab/ab×aB/ab

(2) Ab/aB×aB/Ab

(3) AB/ab×Ab/aB

(4) Ab/aB×aB/ab

(5) AB/ab×AB/ab

(6) AB/ab×aB/ab

In the case of each gene for a trait, the relationship is complete recessive. How many progeny crosses give a 1:2:1 phenotypic ratio and differ from the genotypic ratio?

For the following hybrids:

(1) Ab/ab x aB/ab

(2) Ab/aB x aB/Ab

(3) AB/ab x Ab/aB

(4) Ab/aB x aB/ab

(5) AB/ab x AB/ab

(6) AB/ab x aB/ab

In the case of each gene for a trait, the relationship is complete recessive. How many progeny crosses give the phenotypic ratio and differ from the genotypic ratio?

In a plant species, the gene for flower color has two alleles A and a, the gene for fruit shape has two alleles B and b.. Know that two pairs of genes are located on the same chromosome and are completely linked. For a heterozygous plant with two pairs of self-pollinating genes, what is the maximum number of phenotypes in the offspring?

In a plant species, the gene for flower color has two alleles A and a, the gene for fruit shape has two alleles B and b.. Know that two pairs of genes are located on the same chromosome and are completely linked. Given a plant that is heterozygous for both self-pollination genes, what is the minimum number of phenotypes in the offspring?

In a plant species, gene A regulates tall stem, gene a regulates short stem; gene B regulates round fruit, gene b regulates long fruit; These genes are located on the same autosome. Let the hybrid P: $fracAbaB$ × $fracAbab$. Know the fully linked genes. Theoretically, the phenotypic ratio of high stem, round fruit in F1 would be

In a plant species, gene A regulates tall stem, gene a regulates short stem; gene B regulates round fruit, gene b regulates long fruit; These genes are located on the same autosome. Let the hybrid P: $fracAbaB$ × $fracAbab$. Know the fully linked genes. Theoretically, the phenotypic ratio of high stem, long fruit in F1 would be

Indicates: AB- and A-bb: white; aaB-: purple, aabb: yellow. The gene D for the long trait is dominant over the d allele for the short trait. Do the hybrid (P) $AafracBdbD$× $AafracBdbD$. Know the chromosome structure does not change during meiosis. The ratio of the short white phenotype obtained in the offspring is:

Indicates: AB- and A-bb: white; aaB-: purple, aabb: yellow. The gene D for the long trait is dominant over the d allele for the short trait. Do the hybrid (P) $AafracBdbD$× $AafracBdbD$. Know the chromosome structure does not change during meiosis. The ratio of the long purple phenotype obtained in the offspring is:

In a plant species, gene A for tall stem is dominant over gene a for short stem: gene B for round seeds is completely dominant over gene b for oval fruit: the genes are completely linked together . Which of the following crosses gives a 1:2:1 . phenotype?

Given that each gene determines a trait, the dominant allele is completely dominant. Which of the following crosses will produce offspring with a phenotype that segregates in the ratio l : 1 : 1 : 1 ?

If the genes are completely linked, one gene determines one trait, and the dominant gene is completely dominant, then the hybridization gives a phenotypic ratio of 3: 1.

In an insect species allele A for long wings is dominant over allele a for short wings, allele B for long antennae is dominant over allele b for short antennae. These two genes are located on the same chromosome pair, inheritance is completely linked. For the following hybrids:

(I.fracAbaB times fracAbab); (II.fracABAb times fracaBab) );

(III.fracAbab times fracAbab); (IV.fracaBab times fracaBab);

(V.frac{Ab}{aB} times fracABab); (VI.fracABab times fracAB{{ab}})

Theoretically, how many crosses will produce offspring with the phenotype associating in a ratio of 3: 1?

In the case of complete association and each gene regulates a trait, the dominant allele is complete. Which of the following crosses gives 100% phenotypic ratio in offspring?

In a plant species, allele A for tall stem is dominant over allele a for short stem, allele B for round fruit is completely dominant over allele b for oval fruit. Know that the pairs of genes are located on the same pair of chromosomes and are completely linked. Which of the following crosses will produce offspring with a genotype ratio and a phenotypic ratio of 1:2:1?

In a plant species, the fruit shape trait is regulated by two pairs of non-alleles (Aa, Bb) that segregate independently. Flower color is controlled by a gene with 2 alleles. For plants (P) to self-pollinate, obtained F1 with cleavage phenotype at the rate of 56.25% round fruit trees, red flowers: 18.75% oval fruit trees. red flowers: 25% long fruit trees, white flowers. Given that no mutation occurs, which of the following genotypes (P) is consistent with the above result?

In a plant species, the fruit shape trait is regulated by two pairs of non-alleles (Aa, Bb) that segregate independently. Flower color is controlled by a gene with 2 alleles. For plants (P) to self-pollinate, F1 was obtained with a divergent phenotype at the rate of 37.5% round fruit trees, red flowers: 18.75% round fruit trees, white flowers: 18.75% oval fruit trees. , red flowers: 18.75% long fruit trees, red flowers: 6.25% long fruit trees, white flowers. Given that no mutation occurs, which of the following genotypes (P) is consistent with the above result?

In a plant species, when crossbred between two purebred plants with tall stems, dark red seeds with low stems, white seeds, people get F1 with high body, light red seeds. Continue to randomly cross-pollinate F1 with each other, obtain F2 that separates in the ratio of 1 tall stem, dark red seeds: 4 tall stems, medium red seeds: 5 tall stems, light red seeds: 2 tall stems, pink seeds: 1 stem low, light red seeds: 2 low stems, pink seeds: 1 short stem, white seeds. Knowing that all events in the process of oocyte and pollen production are the same and no mutations occur. Which of the following conclusions is wrong?

In a plant species, when crossbred between two purebred plants with tall stems, dark red seeds with low stems, white seeds, people get high F1 whole body, light red seeds. Continue to randomly cross-pollinate F1 with each other, obtain F2 that separates in the ratio of 1 tall stem, dark red seeds: 4 tall stems, medium red seeds: 5 tall stems, light red seeds: 2 tall stems, pink seeds: 1 stem low, light red seeds: 2 low stems, pink seeds: 1 short stem, white seeds. Knowing that all events in the development of ovules and pollen grains are the same and no mutations occur. Which of the following conclusions is wrong?

When crossing two purebred parents with two pairs of contrasting traits, the same-sex F1 will express the trait of one parent, continue to give F1 a cross for analysis, if the progeny is obtained a ratio of 1 : 1, those two traits are inherited

In a plant species, given that each gene regulates a trait, the dominant allele is completely dominant. Considering 5 gene loci are on the same linkage group, each gene locus has two alleles. For purebred plants with dominant phenotype for all dominant traits, cross-breed with plants with recessive phenotype for all traits (P), yield F1. Let F1 self-pollinate, get F2. Know that there are no mutations and no gene permutations. Theoretically, how many of the following statements are true?

I. F2 can have up to 32 genotypes.

See also: Tien Len Southern Zingplay, Tien Len Southern Zingplay

II. In F2, the homozygous recessive phenotype for all 5 traits accounts for 25%.

III.In F2, remove all individuals with recessive phenotype, then give all individuals with dominant phenotype random cross-breeding to obtain F3 with 5 recessive phenotypes, accounting for 1. /9.

IV. Randomly select an individual with a dominant phenotype for 5 traits in F2, the probability of obtaining a purebred individual is 1/3.

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