If an individual has two identical alleles for a gene, this genotype is called:

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Study for the Leaving Certificate Biology Test. Prepare with flashcards and multiple-choice questions. Each question includes hints and explanations to enhance learning. Get ready to excel in your exam!

Multiple Choice

If an individual has two identical alleles for a gene, this genotype is called:

Explanation:
When both copies of a gene are the same allele, the organism is homozygous for that gene. This means you have either two dominant alleles (BB) or two recessive alleles (bb). If the two alleles are different (one dominant, one recessive), the genotype is heterozygous. Hemizygous refers to having only one allele for a gene (as in males for many X-linked genes), while monogenic refers to a trait controlled by a single gene, not the state of the alleles themselves. So, two identical alleles define homozygous.

When both copies of a gene are the same allele, the organism is homozygous for that gene. This means you have either two dominant alleles (BB) or two recessive alleles (bb). If the two alleles are different (one dominant, one recessive), the genotype is heterozygous. Hemizygous refers to having only one allele for a gene (as in males for many X-linked genes), while monogenic refers to a trait controlled by a single gene, not the state of the alleles themselves. So, two identical alleles define homozygous.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy