Terminologies Used in Genetics

How many types of gametes can be formed by the ${\mathrm{F}}_1$progeny, resulting from the following cross?
$\text{AABBCC} \; \times \text{aabbcc}$

A cross was performed between two parent plants of unknown genotypes. The offspring were segregated based on two flower characteristics i.e. flower colour [magenta $\left(\mathrm{M}\right)$ or white] and flower position [axillary $\left(\mathrm{A}\right)$ or terminal] and counted. The two genes responsible for these characters are not linked and segregate independently. Based on the information given in the table, predict the genotypes of the parents.

Suppose the three non-linked autosomal genes $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ control coat colour in an animal and the dominants alleles $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ are responsible for dark colour and the recessive alleles $\mathrm{a}, \mathrm{b}$ and $\mathrm{c}$ are responsible for light colour. If a cross between a male of $\mathrm{AABBCC}$ genotype and a female of $\mathrm{aabbcc}$ genotype produces $640$ offsprings in the ${\mathrm{F}}_2$-generation, how many of them are likely to be of the parental genotype?

Usually the number of alleles of a gene are-

How many different kinds of gametes will be produced by a plant having the genotype $\mathrm{AABbCC}?$
 

In an organism, tall phenotype is dominant over recessive dwarf phenotype and the alleles are designated as $T$ and $t,$ respectively. Upon crossing two different individuals, total $250$ offsprings were obtained, out of which $124$ displayed tall phenotype and rest were dwarf. Thus, the genotype of the parents were

In a breed of dog, long-haired phenotype is recessive to short-hair. In a litter, one pup is short- haired and its sibling is long-haired. Consider the following possible phenotypes of the parents.

i. Both parents are short-haired.

ii. Both parents are long-haired.

iii. One parent is short-haired, and one is long- haired.

Choose the CORRECT combination of the possible parental phenotypes.

A plant with genotype AABBCC is crossed with another plant with aabbcc genotype. How many different genotypes of pollens is possible in an ${\mathrm{F}}_1$ plant if these three loci follow an independent assortment?

The hereditary characters are due to

Find out the statements that come under the scope of genetics from the following.

'One gene one enzyme' concept was put forward by:

The term "genotype" was coined by

Who coined the term "gene"?

If a cross made between two individuals produces offspring with $50\%$ dominant character $\left(\mathrm{A}\right)$ and $50\%$ recessive character (a), then the genotypes of the parents are

A true breeding line is one that

In hybridization, $\mathrm{Tt}\times \mathrm{tt}$  gives rise to the progeny of ratio

An inherited character and its detectable variant is known as

Organisms phenotypically similar but genotypically different are said to be