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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
dihybrid
B
Punnet square
C
phenotype
D
genotype
2) What is an allele?
A
A form of sexual reproduction
B
A sperm cell
C
A variation of a gene
D
An egg cell
3) In humans, a male has
A
one X chromosome only.
B
two X chromosomes
C
two Y chromosome
D
one X chromosome and one Y chromosome
4) Human female produce egg cells that have
A
two X chromosomes
B
one X or one Y chromosome
C
one X chromosome
D
one X and one Y chromosome
5) 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
6) Colorblindness is more common in males than female because
A
the allele for colorblindness is located on the Y Chromosome
B
the allele for colorblindness is recessive and located on the X chromosome
C
males who are colorblind have two copies of the allele for colorblindness
D
father pass the allele for colorblindness to their sons only
7) which of these disorders is recessive?
A
Dwarfism
B
Huntingtons Disease
C
Cystic Fibrosis
8) Gametesmust be haploid because
A
fertilization results with a haploid zygote
B
gametes are small and can hold only the haploid number of chromosomes
C
two gametes will unite during fertilization to create a diploid cell
D
the gametes' chromosomes will be replicated prior to cell division
9) 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
Mutations aremore likely to occur in asexual reproduction
D
sexual reproduction may occur at a faster rate
10) During DNA replication, the wrong nucleotide was inserted in the DNA sequence. Which of the following terms describes this situation?
A
Transcription
B
Regeneration
C
Translation
D
Mutation
*select an answer for all questions
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