Class 12BiologyPrinciples of Inheritance and VariationMix Examples- Principles of Inheritance and Variation
EasyWhich of the following statements are correct?
$i$. $X$ chromosome has a large amount of euchromatin.
$ii$. Heterochromatin is genetically inert.
$iii$. Both $X$ and $Y$ chromosomes are homologous.
$iv$. Crossing over does not take place in sex chromosomes in females.
Choose the correct option.
$i$. $X$ chromosome has a large amount of euchromatin.
$ii$. Heterochromatin is genetically inert.
$iii$. Both $X$ and $Y$ chromosomes are homologous.
$iv$. Crossing over does not take place in sex chromosomes in females.
Choose the correct option.
- A$i$ and $ii$ only
- B$ii$ and $iii$ only
- C$i, ii$ and $iii$ only
- D$i, ii$ and $iv$ only
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Similar Questions
Choose the correct sequence of True $(T)$ and False $(F)$ statements:
$(i)$ Queen Elizabeth shows a number of haemophilic descendants.
$(ii)$ Variation in blood group prevalences is due to incomplete dominance.
$(iii)$ Drosophila has three pairs of autosomal chromosomes.
$(iv)$ In birds,the female is heterozygous.
$(i)$ Queen Elizabeth shows a number of haemophilic descendants.
$(ii)$ Variation in blood group prevalences is due to incomplete dominance.
$(iii)$ Drosophila has three pairs of autosomal chromosomes.
$(iv)$ In birds,the female is heterozygous.
Medium
View SolutionThe application of the principles of genetics for the improvement of the human race is called ..............
Match List $I$ with List $II$:
List $I$ List $II$ $A$. Two or more alternative forms of a gene $I$. Backcross $B$. Cross of $F_1$ progeny with homozygous recessive parents $II$. Ploidy $C$. Cross of $F_1$ progeny with any of the parents $III$. Allele $D$. Number of chromosome sets in plant $IV$. Test cross
Choose the correct answer from the options given below:
| List $I$ | List $II$ |
|---|---|
| $A$. Two or more alternative forms of a gene | $I$. Backcross |
| $B$. Cross of $F_1$ progeny with homozygous recessive parents | $II$. Ploidy |
| $C$. Cross of $F_1$ progeny with any of the parents | $III$. Allele |
| $D$. Number of chromosome sets in plant | $IV$. Test cross |
Choose the correct answer from the options given below:
MediumNEET 2024
View SolutionWhich of the following is a correct method for the formation of a new species?
Medium
View SolutionMatch the items of column $I$ with column $II$:
Column $I$ Column $II$ $(a) XX-XO$ method of sex determination $(i)$ Turner's syndrome $(b) XX-XY$ method of sex determination $(ii)$ Female heterogametic $(c)$ Karyotype $45$ $(iii)$ Grasshopper $(d) ZW-ZZ$ method of sex determination $(iv)$ Female homogametic
Select the correct option from the following:
| Column $I$ | Column $II$ |
| $(a) XX-XO$ method of sex determination | $(i)$ Turner's syndrome |
| $(b) XX-XY$ method of sex determination | $(ii)$ Female heterogametic |
| $(c)$ Karyotype $45$ | $(iii)$ Grasshopper |
| $(d) ZW-ZZ$ method of sex determination | $(iv)$ Female homogametic |
Select the correct option from the following:
MediumNEET 2019
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