(D) Homeotic genes are a group of genes that control the pattern of body formation during early embryonic development of organisms.These genes encode

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(D) Homeotic genes are a group of genes that control the pattern of body formation during early embryonic development of organisms.These genes encode transcription factors that determine the identity of body segments along the anterior-posterior axis.In $Drosophila$,mutations in homeotic genes can lead to homeotic transformations,where one body part is replaced by another,such as the development of legs in place of wings (e.g.,the $Antennapedia$ mutation).Therefore,the correct answer is $D$.

Class 12 Biology Principles of Inheritance and Variation Mix Examples- Principles of Inheritance and Variation

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In $Drosophila$,during organ differentiation,if one organ is transformed into another (e.g.,legs instead of wings),what is the gene responsible for such transformation called?

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A
Double dominant gene
B
Plastid genes
C
Complementary gene
D
Homeotic gene

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Mix Examples- Principles of Inheritance and Variation

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In a cross between genotypes showing recessive epistasis,the $F_2$ phenotypic ratio will be .....

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Match the terms in Column-$I$ with their descriptions in Column-$II$ and select the correct option.
Column-$I$ Column-$II$
$(A)$ Dominance $(1)$ Many genes govern a single character.
$(B)$ Co-dominance $(2)$ In a heterozygous organism, only one allele expresses itself.
$(C)$ Pleiotropy $(3)$ In a heterozygous organism, both alleles express themselves fully.
$(D)$ Polygenic inheritance $(4)$ $A$ single gene influences many characters.

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In which one of the following combinations $(a-d)$ of the number of chromosomes is the present day hexaploid wheat correctly represented?

Combination Monosomic,Haploid,Nullisomic,Trisomic

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The number of chromosomes present in a gorilla is:

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Presence of a single allele of a character in a diploid organism is known as $:$

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Column-$I$	Column-$II$
$(A)$ Dominance	$(1)$ Many genes govern a single character.
$(B)$ Co-dominance	$(2)$ In a heterozygous organism, only one allele expresses itself.
$(C)$ Pleiotropy	$(3)$ In a heterozygous organism, both alleles express themselves fully.
$(D)$ Polygenic inheritance	$(4)$ $A$ single gene influences many characters.

In $Drosophila$,during organ differentiation,if one organ is transformed into another (e.g.,legs instead of wings),what is the gene responsible for such transformation called?

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In a cross between genotypes showing recessive epistasis,the $F_2$ phenotypic ratio will be .....

In which one of the following combinations $(a-d)$ of the number of chromosomes is the present day hexaploid wheat correctly represented? Combination Monosomic,Haploid,Nullisomic,Trisomic

The number of chromosomes present in a gorilla is:

Presence of a single allele of a character in a diploid organism is known as $:$

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In which one of the following combinations $(a-d)$ of the number of chromosomes is the present day hexaploid wheat correctly represented?

Combination Monosomic,Haploid,Nullisomic,Trisomic