Inheritance

Females

________ have XX chromosomes, and males have XY chromosomes.

Codominance

________ is when neither allele is dominant over the other, so both show up in the phenotype, e.g.

DNA

In the nucleus of a cell, the ________ double helix supercoils to form structures called chromosomes, on which genes are located.

genome

A(n) ________ is the entire DNA of an organism.

Homozygous

________ is when both inherited alleles are identical for a particular characteristic.

Heterozygous

________ is when both alleles are different for a particular characteristic.

Alleles

________ are different forms of genes which give rise to differences in inherited characteristics.

Y

A father has a(n) ________ chromosome, meaning that he is responsible for determining the sex of a child.

Monohybrid inheritance

________ is the inheritance of a characteristic controlled by a single gene.

Genotype

________ refers to the combinations of alleles that control a certain characteristic.

molecule of DNA

Each ________ is two strands coiled to form a double helix.

Human cells

________ contain 23 pairs of chromosomes.

recessive allele

A(n) ________ needs to be inherited from both parents to show up in the phenotype (lower case letter)