Genetics Question Preview (ID: 11714)
21-30.
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The genetic make up of an organism is called
a) phenotype
b) genotype
c) Punnet square
d) dihybrid
What is an allele?
a) An egg cell
b) A sperm cell
c) A variation of a gene
d) A form of sexual reproduction
In humans, a male has
a) one X chromosome only.
b) two X chromosomes
c) one X chromosome and one Y chromosome
d) two Y chromosome
Human female produce egg cells that have
a) one X chromosome
b) two X chromosomes
c) one X or one Y chromosome
d) one X and one Y chromosome
Most sex-linked genes are located on
a) the autosomes
b) the X chromosome only
c) the Y chromosome only
d) both the X chromosome and the Y chromosome
Colorblindness is more common in males than female because
a) father pass the allele for colorblindness to their sons only
b) the allele for colorblindness is located on the Y Chromosome
c) the allele for colorblindness is recessive and located on the X chromosome
d) males who are colorblind have two copies of the allele for colorblindness
which of these disorders is recessive?
a) Cystic Fibrosis
b) Huntingtons Disease
c) Dwarfism
d)
Gametesmust be haploid because
a) gametes are small and can hold only the haploid number of chromosomes
b) the gametes' chromosomes will be replicated prior to cell division
c) two gametes will unite during fertilization to create a diploid cell
d) fertilization results with a haploid zygote
Why does sexual reproduction result in greater diversity among offspring than does asexual reproduction?
a) Only mitosis must occur in sexual reproduction
b) New combinations of genes result from sexual reproduction
c) sexual reproduction may occur at a faster rate
d) Mutations aremore likely to occur in asexual reproduction
During DNA replication, the wrong nucleotide was inserted in the DNA sequence. Which of the following terms describes this situation?
a) Mutation
b) Regeneration
c) Transcription
d) Translation
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