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Ch.6 Biology: Genes And Heredity Part 2
Test Description: Genes and Heredity
Instructions: Answer all questions to get your test result.
1) Which is true about recessive alleles?
A
Recessivealleles are randomly expressed
B
Recessive alleles are displayed when one recessive alleles is present.
C
Recessive alleles are only expressed when the alleles are homozygous recessive
D
Recessive alleles can never be expressed.
2) When Mendel crossed pure breed round seeded pea (RR) with a pure breed wrinkled seeded on (rr) what were the genotypes expressed in the offspring?
A
none of the above
B
50% Rr and 50% RR
C
100% RR
D
100%Rr
3) Sex cells that contain egg and sperm are called?
A
autosomes
B
haploid cells
C
somatic cells
D
gametes
4) These are body cells which make up almost all of your tissues and organs.
A
haploids
B
diploids
C
gametes
D
somatic cells
5) Chromosome pairs 1-22. Are chromosomes that contain genes for characterstics not directly related to sex.
A
somatic cells
B
meiosis
C
gamets
D
Autosomes
6) All Females have _______ chromosomes.
A
YY
B
XZ
C
XY
D
XX
7) The chromosome number in human cells other than sex cells is?
A
100
B
46
C
23
D
64
8) Is a form of nuclear division that reduces chromosomes numbers from diploid to haploid.
A
mitosis
B
megosis
C
meiosis
D
matetis
9) The prefix (Homo) means?
A
different
B
many
C
little
D
same
10) Gametes join togeather during ____________ which is the actual dusions of egg and sperm and restores the diploid number.
A
Genetics
B
fertilization
C
Meiosis
D
mitosis
*select an answer for all questions
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