Podcast
Questions and Answers
What is the primary function of the protein encoded by the SRY gene?
What is the primary function of the protein encoded by the SRY gene?
- To regulate genes involved in hair growth
- To trigger a cascade of biochemical, physiological, and anatomical features (correct)
- To develop generic embryonic gonads into testes
- To regulate genes involved in eye color
What is the characteristic of the Y chromosome in the X-Y system?
What is the characteristic of the Y chromosome in the X-Y system?
- It is smaller than the X chromosome (correct)
- It has no genes coding for proteins
- It is larger than the X chromosome
- It has more genes than the X chromosome
What percentage of genes on the Y chromosome are expressed only in the testes?
What percentage of genes on the Y chromosome are expressed only in the testes?
- 50% (correct)
- 75%
- 100%
- 25%
Who passes sex-linked alleles to all their daughters but none of their sons?
Who passes sex-linked alleles to all their daughters but none of their sons?
What is the chance of a female inheriting a double dose of the mutant allele compared to a male inheriting a single dose?
What is the chance of a female inheriting a double dose of the mutant allele compared to a male inheriting a single dose?
What is the term for a gene located on either sex chromosome?
What is the term for a gene located on either sex chromosome?
What is the significance of the correlation between a particular trait and an individual's sex found by Morgan?
What is the significance of the correlation between a particular trait and an individual's sex found by Morgan?
On which chromosome is a specific gene for eye color carried?
On which chromosome is a specific gene for eye color carried?
What is the characteristic of sex-linked genes?
What is the characteristic of sex-linked genes?
What is the function of the SRY gene?
What is the function of the SRY gene?
At what stage do the anatomical signs of sex first appear in human embryos?
At what stage do the anatomical signs of sex first appear in human embryos?
What is the characteristic of sex chromosomes in males?
What is the characteristic of sex chromosomes in males?
What is the term for genes located on the same chromosome that tend to be inherited together?
What is the term for genes located on the same chromosome that tend to be inherited together?
What is the expected ratio of phenotypes according to the law of independent assortment?
What is the expected ratio of phenotypes according to the law of independent assortment?
What is the reason for the deviation from the expected ratio of phenotypes in Morgan's cross?
What is the reason for the deviation from the expected ratio of phenotypes in Morgan's cross?
What is the characteristic of the mutant alleles in Morgan's cross?
What is the characteristic of the mutant alleles in Morgan's cross?
What is the result of nondisjunction during meiosis?
What is the result of nondisjunction during meiosis?
Why do plants tolerate genetic defects to a greater extent than animals?
Why do plants tolerate genetic defects to a greater extent than animals?
What is the result of nondisjunction during meiosis?
What is the result of nondisjunction during meiosis?
What is the term for a cell with an abnormal number of chromosomes?
What is the term for a cell with an abnormal number of chromosomes?
What is the result of a trisomic cell?
What is the result of a trisomic cell?
What is the term for an organism with more than two complete sets of chromosomes?
What is the term for an organism with more than two complete sets of chromosomes?
Which of the following groups is more likely to be polyploid?
Which of the following groups is more likely to be polyploid?
What is the significance of polyploidy in the evolution of plants?
What is the significance of polyploidy in the evolution of plants?
What is the ploidy of wheat?
What is the ploidy of wheat?
What happens when a chromosome fragment lacking a centromere is lost during cell division?
What happens when a chromosome fragment lacking a centromere is lost during cell division?
What is the result of a nonreciprocal crossover during meiosis?
What is the result of a nonreciprocal crossover during meiosis?
What is the likely outcome of a diploid embryo that is homozygous for a large deletion?
What is the likely outcome of a diploid embryo that is homozygous for a large deletion?
Why are polyploids more nearly normal in phenotype than aneuploids?
Why are polyploids more nearly normal in phenotype than aneuploids?
What is the result of a chromosomal fragment attaching to a nonhomologous chromosome?
What is the result of a chromosomal fragment attaching to a nonhomologous chromosome?
