Punnett Square

What are alleles?

• Different types of chromosomes found in the nucleus.

• Different forms of a gene that can exist at a specific locus on a chromosome.

• The process by which DNA is copied into RNA.

• The physical location of a gene on a chromosome.

What is the genotype of a plant with round seeds that is heterozygous?

• RR

• Rr

• rr

• Rr'

What is the purpose of a Punnett Square?

• To predict the probability of certain traits in offspring based on the genotypes of the parents.

• To determine the exact traits of the offspring.

• To analyze the physical characteristics of the parents.

• To calculate the age of the parents.

What is the significance of the F1 generation in genetics?

• The F1 generation is the first generation of offspring obtained from a cross of two parental (P) genotypes.

• The F1 generation is the last generation before the F2 generation.

• The F1 generation is the generation that shows only recessive traits.

• The F1 generation is the generation that results from self-pollination.

In a cross between a homozygous dominant (BB) and a homozygous recessive (bb), what will be the genotype of the offspring?

• All offspring will be Bb (heterozygous).

• All offspring will be BB (homozygous dominant).

• All offspring will be bb (homozygous recessive).

• Half of the offspring will be Bb (heterozygous) and half will be bb (homozygous recessive).

What is the phenotype of a plant with genotype Rr?

• Round seeds

• Wrinkled seeds

• Oval seeds

• Flat seeds

What is the genotype of a plant with round seeds that is homozygous dominant?

• RR

• Rr

• rr

• RrRr

What is a Punnett Square?

• A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

• A tool for measuring the height of plants in a garden.

• A method for calculating the age of fossils based on their layers.

• A chart used to track the migration patterns of animals.

What does 'homozygous' mean?

• Having two different alleles for a particular gene

• Having two identical alleles for a particular gene, such as RR or rr

• Having one allele for a gene

• Having no alleles for a gene

If a plant has the genotype tt, what is its phenotype?

• Tall

• Short

• Medium

• Dwarf