GENETICS BIO
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
---|---|---|---|---|---|
A permanent change in the bases on the DNA. It is the only way of creating new alleles | show 🗑
|
||||
A TYPE OF cell division where a single cell divide (segregate) twice to produce four daughter cells. the purpose of meiosis is to produce gametes (sex cells). each of these daughter cels are haploid which only contains one set of chromosomes (23) | show 🗑
|
||||
show | HAPLOID
🗑
|
||||
A cell or an organism consisting of two sets of chromosomes: usually, one set from the mother and another set from the father. (46) | show 🗑
|
||||
A kind of dominance where the dominant alleles completely mask the recessive allele showing up as a heterozygous genotype E.G: RR (RED) + rr (WHITE) = Rr (RED) | show 🗑
|
||||
show | INCOMPLETE DOMINANCE
🗑
|
||||
show | CO-DOMINANCE
🗑
|
||||
show | LETHAL ALLELES
🗑
|
||||
show | SEGREGATION
🗑
|
||||
The way the homologous chromosomes randomly line up at the equator during meiosis, which leads to the independent distribution of maternal and paternal chromosomes into gametes | show 🗑
|
||||
show | MIGRATION
🗑
|
||||
The movement of an organism moving INTO area to another. For example, a bird may immigrate to a new island from another island. | show 🗑
|
||||
show | EMIGRATION
🗑
|
||||
show | GENE FLOW
🗑
|
||||
show | GENETIC DIVERSITY
🗑
|
||||
Occurs during meiosis, specifically prophase I, when homologous chromosomes exchange genetic material, leading to genetic variation | show 🗑
|
||||
What happens to both alleles in a heterozygous organism when co-dominance occurs? | show 🗑
|
||||
show | SOMATIC CELLS
🗑
|
||||
show | GAMETIC CELLS
🗑
|
||||
show | BOTH DOMINANT TRAITS
🗑
|
||||
In co-dominance, what is the phenotype ratio observed when crossing two parents that are heterozygous for both alleles? | show 🗑
|
||||
How does the heterozygous genotype differ between co-dominance and complete dominance? | show 🗑
|
||||
when there are more than two variations of that particular allele | show 🗑
|
||||
show | recessive alleles
🗑
|
||||
when better suited organisms are better adapted to their environment are more likely to survive and reproduce, while passing on their advantageous to the next generation | show 🗑
|
||||
the inheritance of two different genes, each with two alleles | show 🗑
|
||||
show | they are close to each other on the same chromosome and dont assort independently during meiosis. This violates Mendel's law of independent assortment. that genes located on different chromosomes will assort independently.
🗑
|
||||
What happens to the probability of recombination between two genes if they are very close to each other on a chromosome? | show 🗑
|
||||
show | GENETIC LINKAGE
🗑
|
||||
show | THE OCCURENCE OF GENES LOCATED CLOSE TO EACH OTHER ON THE SAME CHROMOSOME THAT TEND TO BE INHERITED TOGETHER
🗑
|
||||
show | THEY DO NOT ASSORT INDEPENDENTLY.
🗑
|
||||
Genes located on the same chromosome that tend to be inherited together, because they do not assort independently during meiosis | show 🗑
|
||||
show | BY CREATING NEW ALLELE COMBINATIONS THAT ARE NOT FOUND IN EITHER PARENT
🗑
|
||||
show | PROPHASE I
🗑
|
||||
What is one consequence of lethal alleles in a population? | show 🗑
|
||||
What typically happens to homozygous recessive individuals with two lethal alleles? | show 🗑
|
||||
show | RECESSIVE LETHAL ALLELES
🗑
|
||||
show | because they often have increased survival or reproductive success compared to other genotypes which helps maintain the allele in the population
🗑
|
||||
How does the presence of lethal alleles in a population affect genetic diversity? | show 🗑
|
||||
How can a lethal allele be maintained in a population? | show 🗑
|
||||
How do lethal alleles affect population ratios in predictions made with Punnett squares? | show 🗑
|
||||
show | neither allele is completely dominant nor completely recessive
🗑
|
||||
show | neither allele is completely masks the other. instead, the phenotype of heterozygous individuals is an intermediate blend of both homozygous phenotypes (E:G: red and white flowers resulting in pink flowers from a cross )
🗑
|
||||
show | the flower colour in snapdragons (E:G:: red flower and white flower which results in offspring with an intermediate pink colour)
🗑
|
||||
what does a heterozygous individual show in cases of incomplete dominance? | show 🗑
|
||||
show | it is an intermediate phenotype between both homozygous parent forms
🗑
|
||||
What key event occurs during prophase I of meiosis? | show 🗑
|
||||
TRUE OR FALSE: Genes that are close together on a chromosome are more likely to undergo crossing over than genes that are further apart. | show 🗑
|
||||
show | TRUE: because it involves the exchange of genetic material between homologous chromosomes during meiosis
🗑
|
||||
Why do linked genes tend to be inherited together? | show 🗑
|
||||
show | Crossing over can produce recombinant chromosomes.
🗑
|
||||
What new genetic outcome results from crossing over that is different from either parent? | show 🗑
|
||||
show | The frequency of recombination between linked genes is proportional to the distance between them on the chromosome.
🗑
|
||||
What information is used to create linkage maps? | show 🗑
|
||||
Which event during prophase I of meiosis contributes to genetic diversity by exchanging genetic material between homologous chromosomes? | show 🗑
|
||||
show | CROSSING OVER: it can break the linkage between genes and produce new combinations of alleles, resulting in recombinant chromosomes
🗑
|
||||
How can a scientist estimate the distance between two genes on the same chromosome? | show 🗑
|
||||
show | The genes are far apart, so the frequency of recombination is high due to crossing over.
🗑
|
||||
show | Crossing over
🗑
|
||||
show | THEY WOULD BE INHERITED TOGETHER
🗑
|
||||
the total number of genes and their alleles present in a population. it encompasses all the genetic diversity within that population | show 🗑
|
||||
show | DIRECTIONAL SELECTION
🗑
|
||||
an event that drastically reduces the size of a population, leading to a decrease in genetic diversity. this can occur in events such as natural disasters or overhunting | show 🗑
|
||||
show | HOMOLOGOUS CHROMOSOMES
🗑
|
||||
a diagram that that diagrams the inheritance of a trait or health condition through generations of a family | show 🗑
|
||||
show | GENETIC DRIFT
🗑
|
||||
show | SEXUAL REPRODUCTION
🗑
|
||||
show | ALLELE FREQUENCY
🗑
|
||||
show | STABILIZING SELECTION
🗑
|
||||
are located on different chromosomes, making them less likely to be inherited together during meiosis | show 🗑
|
||||
the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population | show 🗑
|
||||
show | ASEXUAL REPRODUCTION
🗑
|
||||
different versions of a gene that can result in variations in traits E.G: brown eyes vs blue eyes | show 🗑
|
||||
the diversity of phenotypes or genotypes within a population of species | show 🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
celine.taing