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