MHT CET (PCB) 2025 9th April Evening Shift | Principles of Inheritance and Variation Question 6 | Biology

A large population is showing random mating and not undergoing any evolutionary change. If frequency of allele A is 0.6 , then find out the percentage of homozygous recessive and heterozygous organisms respectively?

$36 \%, 24 \%$

$48 \%, 16 \%$

$16 \%, 36 \%$

$16 \%, 48 \%$

MHT CET (PCB) 2025 9th April Morning Shift

MCQ (Single Correct Answer)

-0

Which of the following statements are correct regarding chromosomal basis of sex determination?

i. The mechanism of sex determination in insect is XX - XO type.

ii. In honey-bee, haplo-diploid type of sex determination is observed.

iii. Human males have homomorphic sex chromosomes.

iv. Human females have heteromorphic sex chromosomes.

v. Chromosomal mechanism of sex determination in birds is ZW-ZZ type.

i, ii and v only

iii and iv only

i, ii and iv only

ii, iv and v only

MHT CET (PCB) 2025 9th April Morning Shift

MCQ (Single Correct Answer)

-0

Following table shows ABO blood group in man. Observe carefully and identify 'P', 'Q' and ' R '.

MHT CET (PCB) 2025 9th April Morning Shift Biology - Principles of Inheritance and Variation Question 2 English

$\quad \mathrm{P}-\mathrm{I}^{\mathrm{A}} \mathrm{I}^{\mathrm{A}}, \quad \mathrm{Q}-\mathrm{AB}, \quad \mathrm{R}-$ antibody a

$\quad \mathrm{P}-\mathrm{I}^{\mathrm{A}} \mathrm{I}^{\mathrm{B}}, \quad \mathrm{Q}-\mathrm{NIL}, \quad \mathrm{R}-$ antibody b

$\mathrm{P}-\mathrm{I}^{\mathrm{B}} \mathrm{I}^{\mathrm{B}}, \quad \mathrm{Q}-\mathrm{B}, \quad \mathrm{R}-\mathrm{NIL}$

$\quad \mathrm{P}-\mathrm{I}^{\mathrm{O}} \mathrm{I}^{\mathrm{A}}, \quad \mathrm{Q}-\mathrm{A}, \quad \mathrm{R}-$ antibody ab

MHT CET (PCB) 2025 9th April Morning Shift

MCQ (Single Correct Answer)

-0

If you cross two heterozygous plants, how many of the all possible $F_1$ offsprings will also be heterozygous?

All

Half

$3 / 4^{\text {th }}$

$1 / 4^{\text {th }}$

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