NEET UG Genetics and Evolution — practice questions — page 8

Explore 218 free Genetics and Evolution questions in NEET UG Biology. Open each question or exercise to read its content, reference answers and available explanation.

Practise Genetics and Evolution with Quill →

Genetics and Evolution questions and exercises with answers

Showing questions 211–218 of 218.

Worked practice questions

NEET · Biology · ABO Blood Group — Genotype ↔ Phenotype

Read exercise and reference answers

Matching pairs

Left
Iᴬ Iᴬ
Right
Blood group A (homozygous)
Left
Iᴬ i
Right
Blood group A (heterozygous)
Left
Iᴮ Iᴮ
Right
Blood group B (homozygous)

Instructions

Match each ABO genotype to its phenotype.

Open this exercise →

The Lac Operon in E. coli is INDUCED (turned ON) by the presence of:

Lactose (which binds repressor and frees operator)
Glucose (which inhibits the operon completely)
Galactose only (the breakdown product)
UV radiation (which damages the operator)

Show answer and solution

Correct answer: A. Lactose (which binds repressor and frees operator)

When lactose is present, it (as allolactose) binds the repressor protein, which falls off the operator. Then RNA polymerase can transcribe the lacZ-Y-A genes. Glucose has the opposite effect (catabolite repression).

Open this question →

The Human Genome Project (HGP) ran from 1990 to:

$1995$
$1999$
$2003$
$2010$

Show answer and solution

Correct answer: C. $2003$

The HGP officially completed in 2003 (13 years from 1990). It sequenced the ~3 billion base pairs of the human genome and identified ~20,000-25,000 protein-coding genes.

Open this question →

How to practise

Choose a Genetics and Evolution question and try to work out your answer.
Open the question to check the correct answer and read its worked solution.
Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Genetics and Evolution practice for NEET UG. Read explanations as you go. No signup form needed to start.

Practise Genetics and Evolution →