(D) Hexaploid wheat $(Triticum \text{ } aestivum)$ has a total of $42$ chromosomes $(2n = 42)$.Since $2n = 42$, the haploid number $(n)$ is $42 / 2 =

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(D) Hexaploid wheat $(Triticum \text{ } aestivum)$ has a total of $42$ chromosomes $(2n = 42)$.Since $2n = 42$, the haploid number $(n)$ is $42 / 2 = 21$.The basic chromosome number $(x)$ for wheat is $7$, as it is a polyploid derived from a genome with $7$ chromosomes.Therefore, $n = 21$ and $x = 7$.

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

Medium

In hexaploid wheat, what are the haploid $(n)$ and basic $(x)$ chromosome numbers?

A
$n = 7$ and $x = 21$
B
$n = 21$ and $x = 21$
C
$n = 21$ and $x = 14$
D
$n = 21$ and $x = 7$

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Chapter

Principles of Inheritance and Variation

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Mix Examples- Principles of Inheritance and Variation

Identify the correct match:
Scientist Associated with
$(i)$ William Bateson $(a)$ Rediscovered Mendel's work.
$(ii)$ $T$.$H$. Morgan $(b)$ Discovered that genes are made of $DNA$.
$(iii)$ $O$.$T$. Avery $(c)$ Coined the term Genetics.
$(iv)$ Hugo de Vries $(d)$ Prepared the first genetic map.

Medium

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What is true for the expression of recessive characters?

Medium

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The father has blood group $AB$ and the mother has blood group $O$. Which of the following blood groups can the child have?

Medium

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In Mr. Kapoor,there is a pair of autosomal genes $Bb$ and a sex-linked factor $d$. What will be the proportion of $Bd$ in his sperm?

MediumAIPMT 1993

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Match the Column-$I$ with Column-$II$:

Column-$I$ Column-$II$

$(a)$ Pleiotropic gene $(i)$ Both alleles express equally

$(b)$ Co-dominance $(ii)$ Change in nucleotide

$(c)$ Epistasis $(iii)$ One gene shows multiple phenotypic expression

$(d)$ Mutation $(iv)$ Non-allelic gene interaction

Column-$I$	Column-$II$
$(a)$ Pleiotropic gene	$(i)$ Both alleles express equally
$(b)$ Co-dominance	$(ii)$ Change in nucleotide
$(c)$ Epistasis	$(iii)$ One gene shows multiple phenotypic expression
$(d)$ Mutation	$(iv)$ Non-allelic gene interaction

DifficultAIIMS 2019

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Scientist	Associated with
$(i)$ William Bateson	$(a)$ Rediscovered Mendel's work.
$(ii)$ $T$.$H$. Morgan	$(b)$ Discovered that genes are made of $DNA$.
$(iii)$ $O$.$T$. Avery	$(c)$ Coined the term Genetics.
$(iv)$ Hugo de Vries	$(d)$ Prepared the first genetic map.

In hexaploid wheat, what are the haploid $(n)$ and basic $(x)$ chromosome numbers?

Similar Questions

Identify the correct match:ScientistAssociated with$(i)$ William Bateson$(a)$ Rediscovered Mendel's work.$(ii)$ $T$.$H$. Morgan$(b)$ Discovered that genes are made of $DNA$.$(iii)$ $O$.$T$. Avery$(c)$ Coined the term Genetics.$(iv)$ Hugo de Vries$(d)$ Prepared the first genetic map.

What is true for the expression of recessive characters?

The father has blood group $AB$ and the mother has blood group $O$. Which of the following blood groups can the child have?

In Mr. Kapoor,there is a pair of autosomal genes $Bb$ and a sex-linked factor $d$. What will be the proportion of $Bd$ in his sperm?

Match the Column-$I$ with Column-$II$: Column-$I$ Column-$II$ $(a)$ Pleiotropic gene $(i)$ Both alleles express equally $(b)$ Co-dominance $(ii)$ Change in nucleotide $(c)$ Epistasis $(iii)$ One gene shows multiple phenotypic expression $(d)$ Mutation $(iv)$ Non-allelic gene interaction

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Identify the correct match:
Scientist Associated with
$(i)$ William Bateson $(a)$ Rediscovered Mendel's work.
$(ii)$ $T$.$H$. Morgan $(b)$ Discovered that genes are made of $DNA$.
$(iii)$ $O$.$T$. Avery $(c)$ Coined the term Genetics.
$(iv)$ Hugo de Vries $(d)$ Prepared the first genetic map.

Match the Column-$I$ with Column-$II$:

Column-$I$ Column-$II$

$(a)$ Pleiotropic gene $(i)$ Both alleles express equally

$(b)$ Co-dominance $(ii)$ Change in nucleotide

$(c)$ Epistasis $(iii)$ One gene shows multiple phenotypic expression

$(d)$ Mutation $(iv)$ Non-allelic gene interaction