For the cross Tt x tt, what is the probability that an offspring is tall?

Prepare for the Leaving Cert Biology exam with our Genetics test! Use targeted study aids, hints, and explanations for each question to boost your confidence and success. Get exam-ready now!

Multiple Choice

For the cross Tt x tt, what is the probability that an offspring is tall?

Explanation:
Tallness is controlled by a dominant allele, so any plant with at least one T shows tall. Crossing a heterozygous tall (Tt) with a homozygous recessive short (tt) produces offspring that can only be Tt or tt, each with equal likelihood. Tt is tall, while tt is short, so half of the offspring will be tall. Therefore, the probability of an offspring being tall is 1/2.

Tallness is controlled by a dominant allele, so any plant with at least one T shows tall. Crossing a heterozygous tall (Tt) with a homozygous recessive short (tt) produces offspring that can only be Tt or tt, each with equal likelihood. Tt is tall, while tt is short, so half of the offspring will be tall. Therefore, the probability of an offspring being tall is 1/2.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy