Free Notes for Class 5–12 | CBSE | 24x7 Access
Student School Teacher Help
Home Schools Pricing
Log in Get Started
Class 10 Science Medium Mcq English Medium

Why were all F1 offspring of a TT x tt cross tall, and not a mixture of tall and short? produce the tall phenotype

Question
Why were all F1 offspring of a TT x tt cross tall, and not a mixture of tall and short? produce the tall phenotype
Because all F1 offspring are heterozygous Tt, and a single dominant 'T' allele is enough to
Because the short trait was destroyed during fertilisation
Because T and t blend to form a new intermediate trait
Because only mothers pass on the tallness trait
Answer
Because all F1 offspring are heterozygous Tt, and a single dominant 'T' allele is enough to
Detailed Explanation
Every F1 offspring inherits one T and one t allele (genotype Tt), and since T is dominant, all F1 plants show the tall phenotype.
Related Questions
Reproductive processes give rise to new individuals that are Science · Heredity In a field of sugarcane, which reproduces largely asexually (vegetatively), we typically observe Science · Heredity Compared to asexually reproducing organisms, sexually reproducing organisms such as humans typically... Science · Heredity If a single bacterium divides repeatedly (asexual reproduction) to produce four bacteria, these four... Science · Heredity

Want the full Science question bank?

Log in for free to unlock practice tests, notes, and an AI tutor for Class 10.

Get started free