Term
| Chromosomes are made of ____________ and __________. |
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Definition
| Chromosomes are made of deoxyribonucleic acid (DNA) and protein |
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Term
| One step in a single eukaryotic cell becoming two daughter cells is the process of ___________ |
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Definition
One step in a single eukaryotic cell becoming two daughter cells is the process of mitosis .
Two other steps: Interphase and Cytokinesis
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Term
The principle that describes that genes segregate without influence on each others inheritance: |
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Definition
| The principle that describes that genes segregate without influence on each others inheritance: Independent Assortment |
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Term
| If an organism has a gamete containing 12 chromosomes, one would expect each of its body cells to contain _____ chromosomes. |
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Definition
| If an organism has a gamete containing 12 chromosomes, one would expect each of its body cells to contain 24 chromosomes. |
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Term
| Compared to the number of chromosomes contained in a body cell of a parent, how many chromosomes would normally be contained in a gamete? |
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Definition
Compared to the number of chromosomes contained in a body cell of a parent, how many chromosomes would normally be contained in a gamete?
One-half as many. |
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Term
Living things grow because________________. |
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Definition
Living things grow because organisms produce more and more cells by mitosis. |
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Term
| How are mature human sperm and eggs similar? |
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Definition
How are mature human sperm and eggs similar? 1) contain the same number of chromosomes 2) produced through the process of Meiosis 3) contain 1/2 the genetic material of parent cell 4) used in the process of sexual reproduction |
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Term
| Female gametes are called _________. |
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Definition
| Female gametes are called eggs/ovules. |
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Term
| Male gametes are called _________. |
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Definition
| Male gametes are called sperm. |
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Term
| Each egg and sperm cell contains a haploid number of chromosomes. After fertilization, a zygote is formed have a __________ number of chromosomes. |
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Definition
| Each egg and sperm cell contains a haploid number of chromosomes. After fertilization, a zygote is formed have a diploid number of chromosomes. |
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Term
| How many chromosomes are there in a human gamete? |
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Definition
How many chromosomes are there in a human gamete?
23 chromosomes |
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Term
| A human zygote contains ____ chromosomes, fifty percent of the total coming from each parent cell. |
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Definition
| A human zygote contains 46 chromosomes, fifty percent of the total coming from each parent cell |
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Term
| Sex cells are also called _______. |
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Definition
| Sex cells are also called gametes. |
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Term
| A fertilized egg is also called a(n) ______________. |
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Definition
| A fertilized egg is also called a(n) zygote |
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Term
| A developing heart increases in size through the process of _______________. |
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Definition
A developing heart increases in size through the process of mitosis. |
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Term
| A female's sex chromosomes are __________. |
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Definition
| A females sex chromosomes are two X chromosomes (XX). |
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Term
| A male's sex chromosomes are __________. |
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Definition
| A male's sex chromosomes are one X and one Y chromosome (XY). |
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Term
| The cell that results from fertilization is called a _________. |
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Definition
| The cell that results from fertilization is called a zygote. |
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Term
The chromosome numbers for dogs are shown. The process that are occurring at A and B are ____. [image] |
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Definition
A = Meiosis B = fertilization [image] |
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Term
| A white mouse whose parents are both white produces only brown offspring when mated with a brown mouse. The white mouse is most probably ____________. |
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Definition
| A white mouse whose parents are both white produces only brown offspring when mated with a brown mouse. The white mouse is most probably homozygous recessive. |
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Term
| In mink, brown fur color is dominant to silver-blue fur color. If a homozygous brown mink is mated with a silver blue mink and 8 offspring are produced, how many would be expected to be silver-blue? |
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Definition
In mink, brown fur color is dominant to silver-blue fur color. If a homozygous brown mink is mated with a silver blue mink and 8 offspring are produced, how many would be expected to be silver-blue? BB x bb = 100% brown Bb so 0% are expected to be silver-blue. |
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Term
The diagram shows a diploid cell with two homologous pairs of chromosomes. Due to independent assort, the possible allelic combinations that could be found in gametes produced by the meiotic division of this cell are _________. [image] |
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Definition
Two homologous chromosomes have four gamete combinations since these are unlinked genes: BD, Bd, bD, and bd. [image] |
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Term
What process would result in the formation of chromosome C from chromosomes A and B. [image] |
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Definition
Crossing over is the process. [image] |
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Term
What is the genotype of generation 1? [image] |
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Definition
Generation 1 is referring to F1 which is heterozygous Ii. [image] |
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Term
| Which event during meiosis leads to a reduction in the chromosome number from 2n to n? |
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Definition
Which event during meiosis leads to a reduction in the chromosome number from 2n to n? Homologous chromosomes travel to opposite sides of the cell. |
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Term
| Which is the best description of the events that take place during anaphase II? |
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Definition
Which is the best description of the events that take place during anaphase II? Sister chromatids are separated and pulled to opposite sides of the cell. |
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Term
| During which phase of meiosis do homologous pairs of chromosome line up next to one another along the equator? |
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Definition
During which phase of meiosis do homologous pairs of chromosome line up next to one another along the equator? Metaphase I |
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Term
| A true-breeding tall pea plant is crossed with a true-breeding short pea plant, and all the offspring are tall. What is the most likely genotype of the offspring assuming a single-gene trait? |
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Definition
A true-breeding tall pea plant is crossed with a true-breeding short pea plant, and all the offspring are tall. What is the most likely genotype of the offspring assuming a single-gene trait? Tt |
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Term
| In which situation are the phenotypes of F2 offspring expected to follow the ratio of 9:3:3:1? |
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Definition
In which situation are the phenotypes of F2 offspring expected to follow the ratio of 9:3:3:1? A dihybrid cross for two unlinked traits. |
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Term
| In mice, black is dominant to white color and colr is determined by a single gene. Two black mice are crossed. The produce 2 black offspring and one white offspring. If the white offspring is crossed with one of its parents, what percent of the offspring are expected to be white? |
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Definition
In mice, black is dominant to white color and colr is determined by a single gene. Two black mice are crossed. The produce 2 black offspring and one white offspring. If the white offspring is crossed with one of its parents, what percent of the offspring are expected to be white? Bb x bb results in a 50 % probability that the offspring will be white. |
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Term
Which of the four cells below representa a healthy gamete that could be produced from cell X? [image] |
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Definition
Which of the four cells below representa a healthy gamete that could be produced from cell X? [image] Cell A could be a healthy gamete. |
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Term
| A phenotype that results from a dominant allele must have at least ________ dominant allele(s) present in the parent(s). |
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Definition
| A phenotype that results from a dominant allele must have at least one dominant allele(s) present in the parent(s). |
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Term
| A man heterozygous for blood type A marries a woman heterozygous for blood type B. The chance that their first child will have type O blood is ________. |
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Definition
A man heterozygous for blood type A marries a woman heterozygous for blood type B. The chance that their first child will have type O blood is ________. Ao x Bo = 25% oo - Type O blood |
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Term
What stage of meiosis is represent below? [image] |
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Definition
What stage of meiosis is represent below? [image] Metaphase II |
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Term
| Suppose an animal is heterozygous AaBb and the traits are not linked. When meiosis occurs, what is the total number of possible combinations of gametes that can be made for these traits? |
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Definition
Suppose an animal is heterozygous AaBb and the traits are not linked. When meiosis occurs, what is the total number of possible combinations of gametes that can be made for these traits? 4 possible gametes: AB, Ab, aB, ab |
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Term
| Suppose an animal is heterozygous AaBbCc and the traits are not linked. When meiosis occurs, what is the total number of possible combinations of gametes that can be made for these traits? |
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Definition
Suppose an animal is heterozygous AaBbCc and the traits are not linked. When meiosis occurs, what is the total number of possible combinations of gametes that can be made for these traits? 8 possible gamete combinations: ABC, ABc, AbC, Abc aBC, aBc, abC, abc |
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Term
| Nondisjunction is related to a number of serious human disorders. How does nondisjunction cause these disorders? |
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Definition
Nondisjunction is related to a number of serious human disorders. How does nondisjunction cause these disorders? Nondisjunction alters the chromosome number. |
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Term
| A pea plant homozygous for the trait of smooth seeds is crossed with a pea plant that is homoszygous for the trait of wrinkled seeds. The first generation produces seeds that are all smooth. What percent of the second-generation plants will have smooth seeds when the F1 generation is self-fertilized? |
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Definition
A pea plant homozygous for the trait of smooth seeds is crossed with a pea plant that is homoszygous for the trait of wrinkled seeds. The first generation produces seeds that are all smooth. What percent of the second-generation plants will have smooth seeds when the F1 generation is self-fertilized? Parents: SS x ss F1: Ss
F1 self fertilized: Ss x Ss = 75% smooth seeds 1/4 SS and 2/4 Ss |
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Term
| When roan cattle are mated, 25% of the offspring are read, 50% are roan, and 25% are white. Upon examination, it can be seen that the coat of a roan cow consists of both red and white hairs. This trait is one controlled by ____________________. |
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Definition
| When roan cattle are mated, 25% of the offspring are read, 50% are roan, and 25% are white. Upon examination, it can be seen that the coat of a roan cow consists of both red and white hairs. This trait is one controlled by codominant alleles. |
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Term
| A cross between a white rooster and a black hen results in 100% Andalusian offspring. When two of these blue offspring are mated, the probable phenotypic ratio seen in their offspring would be? |
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Definition
A cross between a white rooster and a black hen results in 100% Andalusian offspring. When two of these blue offspring are mated, the probable phenotypic ratio seen in their offspring would be? Bb x Bb 25% Black, 50% Blue, and 25% White |
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