Question:
A man, homozygous dominant for widows peak (WW), marries a woman with straight hairline homozygous recessive (ww). How many of their off springs will inherit straight hair line?
A man, homozygous dominant for widows peak (WW), marries a woman with straight hairline homozygous recessive (ww). How many of their off springs will inherit straight hair line?
Show Hint
A homozygous dominant parent crossed with a homozygous recessive parent gives only heterozygous offspring.
Updated On: Nov 12, 2026
- \(100\ \%\)
- \(50\ \%\)
- \(25\ \%\)
- \(0\ \%\)
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Widows peak (W) is dominant over straight hairline (w).
Step 2: Find the gametes
The father (WW) gives only W gametes, and the mother (ww) gives only w gametes.
Step 3: Cross result
Every child is Ww, which is heterozygous, and shows widows peak because W is dominant.
Step 4: Calculation
Children with straight hairline need genotype ww, but none can be ww here, so the percentage is \(0\ \%\).
Final Answer:
None of the offspring will have a straight hairline. \[ \boxed{\text{(D) }0\ \%} \]
Widows peak (W) is dominant over straight hairline (w).
Step 2: Find the gametes
The father (WW) gives only W gametes, and the mother (ww) gives only w gametes.
Step 3: Cross result
Every child is Ww, which is heterozygous, and shows widows peak because W is dominant.
Step 4: Calculation
Children with straight hairline need genotype ww, but none can be ww here, so the percentage is \(0\ \%\).
Final Answer:
None of the offspring will have a straight hairline. \[ \boxed{\text{(D) }0\ \%} \]
Was this answer helpful?
0
0
Top MHT CET Biology Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- Important sperm lysin used for dissolving egg covering is
- In biogas plant, the role of acidogenic bacteria is to
- In $C_{3}$ plants, the first stable product of photosynthesis during the dark reaction is
- In case of anaerobic respiration, the RQ is ___________
View More Questions
Top MHT CET monohybrid cross Questions
- In a monohybrid cross between two heterozygous parents (\(Aa \times Aa\)), what is the genotypic ratio among the offspring?
- In a flowering plant, a cross is made between a homozygous dominant tall plant (TT) and a homozygous recessive dwarf plant (tt). What is the phenotypic ratio of the F1 generation?
- Given below are two statements:
Statement I - Back cross is the crossing of $F_1$ hybrid with one of the two parents from which they were derived.
Statement II - Test cross involves the crossing of $F_1$ hybrid with its homozygous recessive parent.
In light of above statements, choose the correct answer from the option given below. - Monohybrid crosses are useful in demonstrating which of the following laws of inheritance suggested by Mendel?
- Which of the following statements are correct about Mendelian alleles?
(A). The dominant allele expresses itself in the presence of an alternative allele.
(B). The recessive allele does not express in the presence of the dominant allele.
(C). The \(F_{1}\) hybrid produced in a cross between homozygous dominant and homozygous recessive is heterozygous.
(D). A homozygous individual for a trait breeds true and produces two different types of gametes.
Choose the correct answer from the options given below:
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions