Gregor Johann Mendel: Father of Genetics

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What did Gregor Mendel do between 1856 and 1863?

He became a monk at a monastery

He taught biology and had an interest in statistics

He studied at the University of Vienna

He grew and tested over 28,000 pea plants (correct)

How did Mendel ensure certain pea plants only self-pollinated?

By cutting away the stamen of each flower (correct)

By spraying pesticides on the plants

By removing the pistil of each flower

By adding extra nutrients to the soil

What did Mendel conclude from crossing purebred tall and short pea plants?

Traits blend together

Short traits disappear completely (correct)

Tall traits disappear completely

All offspring were medium-sized

What did Mendel state physical traits were inherited as?

Particles Signup and view all the answers

What was the first thing Mendel did in his experiment technique?

Create a true-breeding generation Signup and view all the answers

What was one advantage of using Mendel's peas in his experiments?

Easy to manipulate fertilization Signup and view all the answers

What term is used to describe the alternative forms of genes?

Alleles Signup and view all the answers

Which type of gene is represented by a lowercase letter?

Recessive gene Signup and view all the answers

What does the Principle of Dominance state?

Some alleles are dominant, and others are recessive Signup and view all the answers

What did Mendel's Law of Dominance imply for the offspring?

All offspring will be heterozygous and express only the dominant trait Signup and view all the answers

What is the Principle of Segregation according to Mendel?

Alleles for each trait separate during gamete formation Signup and view all the answers

How many genes does an organism inherit for each characteristic according to Mendel?

One gene from each parent Signup and view all the answers

What principle states that each pair of alleles segregates independently during gamete formation?

Law of Independent Assortment Signup and view all the answers

In a dihybrid cross, if the parents are RrYy and RrYy, what is the probability of producing offspring with round and yellow seeds?

9/16 Signup and view all the answers

Which statement contradicts Mendel's principles of genetics?

Alleles segregate dependently during gamete formation. Signup and view all the answers

What term describes alleles that have been altered by mutation?

Mutant alleles Signup and view all the answers

What is the significance of the 9:3:3:1 phenotypic ratio in a dihybrid cross?

It predicts the probability of producing offspring with specific traits. Signup and view all the answers

In genetics, which term refers to the various ways in which a pair of alleles can affect the phenotype?

Dominance relations Signup and view all the answers