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BMST - Basic Math and Science Genetics and Heredity Questions and Answers Flashcards

6 cards from real BMST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 BMST - Basic Math and Science Genetics and Heredity Questions and Answers flashcards as text

  1. What does the acronym DNA stand for?

    Answer: Deoxyribonucleic acid

    DNA stands for deoxyribonucleic acid, the molecule that carries the genetic instructions for life.

  2. Most X-linked recessive traits affect males more often than females because males:

    Answer: Have only one X chromosome

    Males have only one X chromosome (XY), so a single recessive allele on that X is expressed with no second X to mask it.

  3. If both parents are carriers (Aa) of an autosomal recessive disorder, what is the probability their child will be affected?

    Answer: 25%

    An Aa × Aa cross produces a 1 AA : 2 Aa : 1 aa ratio, so there is a 25% (1/4) chance of an affected (aa) child.

  4. The specific location of a gene on a chromosome is called its:

    Answer: Locus

    The locus (plural: loci) is the fixed position on a chromosome where a particular gene is located.

  5. Which type of cell division produces haploid gametes for sexual reproduction?

    Answer: Meiosis

    Meiosis reduces the chromosome number by half, producing four haploid cells that become gametes.

  6. An organism that has two different alleles for the same gene is described as:

    Answer: Heterozygous

    Heterozygous means the two alleles for a gene differ, such as Tt.