Inheritance of Two Genes

When a group of genes shows linkage then they do not show independent assortment or recombination?

Name the following:

He was the first to suggest occurrence of distinct pairs of chromosomes.

The number of linkage group is one in Escherichia coli or Ascomycetes?

Fill in the blank with the correct option given in the bracket.

The mechanism that causes a gene to move from one linkage group to another is called _____ (inversion/translocation).

Somatic cells of organisms are derived from the zygote.

The maximum number of different gametes of the pollens produced by a tall pea plant with round, yellow, seeds of the genotype $\mathrm{TtRrYY}$, if the three loci are unlinked, would be

A cross wạs carried out between two individuals, heterozygous for two pairs of genes. Assuming segregation and independent assortment, the number of different genotypes and phenotypes obtained respectively would be

The genotypic ratio 1:2:2:4:1:2:1:2:1 is obtained in F₂ generation. What will be the phenotypic ratio?

In Mendel's dihybrid cross, homozygous, dominant, round, yellow seed parent was crossed with a homozygous recessive wrinkled green seed parent. If the round seed shape $\left(\mathrm{R}\right)$ is dominant over wrinkle seed shape $\left(\mathrm{r}\right)$ and yellow seed colour $\left(\mathrm{Y}\right)$ is dominant over green seed colour $\left(\mathrm{y}\right),$ what is the expected percentage of obtaining ${\mathrm{F}}_2$ progeny with wrinkled yellow seeds in the ${\mathrm{F}}_2$ population in the dihybrid cross? No linkage is there between the two genes.

Match the following:

The correct match is

In a dihybrid cross, the phenotypes are: round & yellow; wrinkled & yellow; round & green and wrinkled & green seeds. What is the probability of wrinkled yellow seeds in the above cross?

Match the following lists:

A pure long-winged, grey-bodied female fruit fly is crossed with a vestigial-winged, black-bodied male fruit fly. The expected percentage of long-winged and grey-bodied insects in ${\mathrm{F}}_1$ generation is

In Drosophila, the genes for the body color and eye color are present on:

Out of a population of $800$ individuals in ${\mathrm{F}}_2$ generation of cross between yellow round and green wrinkled pea plants, what would be the number of yellow and wrinkled seed?

Female $\mathrm{AaBb}$ is crossed with the male $\mathrm{AAbb}$ gametes shall be:

The exchange of genetic material between the two homologous chromosomes occurs in diplotene stage.

During zygotene stage the homologous chromosomes start forming pairs.

In an experiment of Morgan in Drosophila for eye colour and wing size. What percentage of linkage was observed in F₂ generation?

In dihybrid cross, the phenotypic ratio will be 1:1:2 or 9:3:3:1?