In Mendel's experiment, what trait was determined to be dominant when crossing tall and short pea plants?

Tallness was determined as the dominant trait.

Fill in the blank: Heredity explains how traits like skin color, hair type, eye color, and ___ are passed from one generation to the next.

Height

True or False: All variations within a species have the same likelihood of surviving in their environment.

False. Survival chances depend on the specific traits of each variation.

What is the main difference between asexual and sexual reproduction in terms of variation?

Asexual reproduction leads to fewer variations among offspring, while sexual reproduction introduces greater genetic diversity due to the combination of genes from two parents.

Fill in the blank: Gregor Johann Mendel is known as the 'Father of ___.'

Genetics

What is the role of environmental factors in determining the survival of variations within a species?

Environmental factors select for certain traits, influencing which variations are more likely to survive and reproduce.

What chromosomal pair determines the sex of a human individual?

The 23rd pair of chromosomes, consisting of X and Y sex chromosomes, determines an individual's sex.

Fill in the blank: The principle of independent assortment states that different traits are inherited ___ of each other.

Independently

What does the term 'dihybrid inheritance' refer to in Mendel's experiments?

Dihybrid inheritance refers to the simultaneous inheritance of two traits, as seen in Mendel's experiments with seed shape and seed color.

How do traits like plant height get expressed at the biological level?

Traits are expressed through proteins made from genes, with specific genes encoding for enzymes that influence growth.

Explain the genotype and phenotype ratios observed in Mendel's F2 generation for a dihybrid cross.

In the F2 generation of a dihybrid cross, the phenotypic ratio is 9:3:3:1, representing the combinations of seed shape and color resulting from different allele pairings.

What is the primary contribution of Mendel's pea plant experiments to modern genetics?

Mendel's experiments established foundational principles of inheritance, such as dominance, segregation, and independent assortment.

What happens to the genetic composition of offspring produced through sexual reproduction?

Offspring inherit half of their genes from each parent, resulting in a unique combination of traits.