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Outcome 8 - Ch.6 "Mendel & Meiosis" Flashcards | StudBud
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Outcome 8 - Ch.6 "Mendel & Meiosis"
Outcome 8 - Ch.6 "Mendel & Meiosis"
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1
Which of these statements is true of homologous chromosomes?
they are similar in size, shape and genetic information
they are exactly alike
they divide during Meiosis II
they are clones of one another
2
____ refers to the likelihood that something will occur.
probability
genotype
ratio
statistics
3
The set of alleles that an individual has such as Tt, TT, or tt
dominant
phenotype
genotype
homozygous
4
This image represents which stage of Meiosis?
metaphase II
metaphase I
prophase I
telophase I
5
How many chromosomes are present in a human somatic cell?
23
46
44
22
6
This image represents which stage of Meiosis?
telophase I
telophase II
anaphase I
prophase II
7
This image represents which stage of Meiosis?
anaphase I
prophase I
metaphase I
anaphase II
8
When alleles of different genes separate independently of one another as gametes form, this is called
Law of segregation
law of heredity
law of independent assortment
Mendel's Law of inheritance
9
A ____ is a cross between an organism that shows the dominant phenotype with and organism with the recessive phenotype.
test cross
homozygous cross
heterozygous cross
genetics
10
This branch of biology studies heredity and the passing of traits from parent to offspring _____.
zoology
botany
biology
genetics
11
What percentage of offspring from this cross would be green?
75%
50%
25%
0%
12
Autosomes determine an organism's sex.
True
False
13
This image represents which stage of Meiosis?
metaphase II
metaphase I
prophase I
telophase I
14
During Meiosis II what happens to sister chromatids?
they are not involved in meiosis
they duplicate
they separate
they remain together
15
What is the main difference between a diploid and haploid cell?
haploid cells contain half the number of chromosomes
haploid cells are body cells
diploid cells are sex cells
haploid cells contain a full set of chromosomes
16
The letters on the inside of the grid on a Punnett square represent _____.
genotypes of the offspring
chromosomes of the parents
phenotypes of the parents
test crosses of offspring
17
Sex chromosomes determine all an organism's general body traits.
True
False
18
A karyotype contains information such as _____.
none of the above
all of the above
an organism's sex
the organism's total number of chromosomes
19
Independent assortment, genetic recombination by crossing over and sexual reproduction contribute to genetic variation.
True
False
20
Which of the following is one of Mendel's conclusions based on his observations?
organisms inherit 2 copies of each gene, 1 from each parent
organisms that give rise to purebreds are superior
organisms that self-polinate do not have "either-or" traits
organisms that have intermediate features are self pollinating
21
____ is referred to as an alternate form of a gene.
gene
chromosome
allele
chromatid
22
A _____ is a grid like system the helps scientists predict the potential genotypes when crossing 2 parents.
genotype
Punnett Square
test cross
ratio cross
23
This is not expressed or is hidden when the dominant form of a trait is present in the offspring ...
genotype
recessive
homozygous dominant
phenotype
24
This image represents which stage of Meiosis?
telophase II
telophase I
anaphase I
prophase II
25
The genotypic ratio of this crossing results in...
2 Gg : 1 gg
2 Gg : 2 gg
1 green pod & 2 yellow pods
2 green pods & 2 yellow pods
26
During which stage of meiosis does crossing over take place?
Metaphase II of Meiosis II
Prophase II of Meiosis II
Telophase I of Meiosis I
Prophase I of Meiosis I
27
This image represents which stage of Meiosis?
metaphase II
telophase I
prophase I
metaphase I
28
This image represents which stage of Meiosis?
metaphase I
prophase I
telophase I
anaphase I
29
Which of the following best describes what occurs during Meiosis?
produces four haploid gametes that are unique
takes place only in haploid cells
the end result is 2 genetically identical daughter cells
takes place in all body cells
30
When gametes form and the two alleles for a trait separate, it is known as ______.
law of independent assortment
Mendel's Law of inheritance
Law of segregation
law of heredity
31
When parents pass their traits on to their offspring, we refer to this as ____.
genetics
heredity
meiosis
reproduction
32
When the alleles of a specific gene are the same (BB) ...
phenotype
recessive
heterozygous
homozygous
33
The outward appearance of a trait or physical appearance - Joe has brown hair.
dominant
genotype
phenotype
recessive
34
The expressed form of a gene - what masks another traits such as (R)
recessive
heterozygous
dominant
homozygous
35
This Punnett square shows a cross between what 2 parents?
heterozygous & homozygous dominant
homozygous recessive & heterozygous
2 heterozygous parents
homozygous dominant & homozygous recessive
36
This image represents which stage of Meiosis?
anaphase I
metaphase I
telophase I
metaphase II
37
In humans, Meiosis produces cells that contain ___ chromosomes.
46
24
22
23
38
When the alleles of a specific gene are different (Bb) ...
phenotype
heterozygous
recessive
homozygous
