Heredity Test IBMYP 2

Front

What molecule contains instructions for making proteins that determine an organism's traits?

Back

DNA

Front

What are the blood types of the parents in a Punnett square showing a cross between Type B and Type AB?

Back

Type B and Type AB

Front

What type of trait is represented by a pedigree showing a sex-linked recessive pattern?

Back

Sex-Linked Recessive

Front

Match the terms: A - sex chromosomes, B - autosomes.

Back

A - autosomes, B - sex chromosomes

Front

Which genotypes result in the same phenotype: iA iA and iB iB, or iB iB and iB i?

Back

iB iB and iB i

Front

What is the definition of heredity?

Back

Heredity is the passing of traits from parents to offspring through genes.

Front

What are alleles?

Back

Alleles are different forms of a gene that can exist at a specific locus on a chromosome.

Front

What is a Punnett square used for?

Back

A Punnett square is used to predict the genetic outcomes of a cross between two organisms.

Front

Define phenotype.

Back

Phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What is the difference between dominant and recessive traits?

Back

Dominant traits are expressed in the phenotype even if only one allele is present, while recessive traits are expressed only when two copies of the allele are present.