Explain why Catasetum orchids have male and female flowers on the same plant that look very...
Explain why Catasetum orchids have male and female flowers on the same plant that look very different. What specific type of selection best explains this outcome?
Homework Answers
This is very rare that the same plant produces male and female flowers. Actually, in these cases, the outcome is the manifestation of the temperature and it is this temperature that dictates the sex. It has been seen that when spikes are getting buds and if the temperature is higher than normal at a particular instance then all the flowers are female. Whereas when temperature fluctuation takes place both flowers can grow on the same spike as the buds form progressively along the spike over a period of time.
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Explain why Catasetum orchids have male and female flowers on
the same plant that look very...
7. Which of the following is seen in plants with self-fertilization? a. Each individual plant only...
7. Which of the following is seen in plants with self-fertilization? a. Each individual plant only produces either male or female flowers b. Male and female flowers are produced in different parts of the plant c. Male and female flowers are produced at different points in time d. Pollen tube is incompatible with stigma from the same plant e. Flower bud never opens, pollen flows directly to the stigma 8. Select one outcome that is NOT the result of the...
A population of beetles is surviving by eating the flowers of one particular species of plant...
A population of beetles is surviving by eating the flowers of one particular species of plant in a meadow and the beetles do not leave the meadow because they can’t fly very far. The meadow is sprayed with herbicide and those plants all die. Almost all of the beetles then die of starvation. The few that survive to happen to have longer wings and they are able to fly off and make it to another meadow where there are still...
1. A plant with red flowers is crossed with a white-flowered plant of the same species....
1. A plant with red flowers is crossed with a white-flowered plant of the same species. All the seeds, when grown, produce plants with red flowers. Assuming that the flower color is controlled by a single pair of alleles, which allele is dominant and which is recessive? 2. How does inbreeding increase the incidence of recessive disorders in a population? 3. Why does an individual always have only two alleles for a given gene? 4. In cats, the allele (S) for short fur...
For Examples of discrimination lets prentend a male and female work in the same workplace. a...
For Examples of discrimination lets prentend a male and female work in the same workplace. a job opens and both apply. The male before even being interviewed is told by HR he can not have the position because he does not have a bachelors degree. A woman also applies. she does not have a bachelors either and so she gets an interview. Instead of getting the job that is posted HR gives her a job that was never posted. Thus,...
Do male and female college students have the same distribution of living arrangements? Use a level...
Do male and female college students have the same distribution
of living arrangements? Use a level of significance of 0.05.
Suppose that 101 randomly selected male college students and 51
randomly selected female college students were asked about their
living arrangements: dormitory, apartment, or other. The results
are shown in Table. Do male and female college students have the
same distribution of living arrangements?
Dormitory
Apartment
Other
Male
41
34
26
Female
19
27
5
What is the chi-square test-statistic...
Plant Lab Select 3 differently shaped flowers from a florist or grocery store – (Walmart even...
Plant Lab Select 3 differently shaped flowers from a florist or grocery store – (Walmart even has a decent selection – a lily, a carnation, and a snapdragon are all nice and very different from one another). • Find out what kind of flowers you have and find an image of each on the internet – It would be best if you can find one that talks about flower parts • For each flower, note whether there are sepals, petals,...
A cross has been set up between a true breeding tall plant producing white flowers and...
A cross has been set up between a true breeding tall plant producing white flowers and a true breeding short plant producing red flowers. One can be certain that this type of a cross: will result in a 3 red: 1 white ratio will result in all red F_1 flowers cannot produce progeny because the parental phenotypes are different from one another is a monohybrid cross is a dihybrid cross In humans, free earlobes (E) are dominant to attached earlobes...
You have identified a new species of flowering plant with red flowers instead of the usual blue flowers. You performed a cross and found that all of the F1 plants had purple flowers. When you self-fer...
You have identified a new species of flowering plant with red flowers instead of the usual blue flowers. You performed a cross and found that all of the F1 plants had purple flowers. When you self-fertilized these F1 plants, the resulting F2 was: Blue flowers: 1034 Purple flowers: 297 Red flowers: 94 What would the expected numbers be if these phenotypes were due to two alleles with incomplete dominance at a single loci? What if these phenotypes were due to...
1.) Explain why linkage measurements are more accurate for two genes that are close together than...
1.) Explain why linkage measurements are more accurate for two genes that are close together than two genes that are farther apart. 2.) A female poodle with green eyes (recessive) and yellow spots on her tongue (recessive) was bred with a male poodle who was the wild-type phenotype but hybrid genotype for those same two traits. In a series of litters, this breeding pair gave birth to the following 85 puppies: 39 Normal eyes, normal tongue 36 Green eyes, yellow-spot...
Prior to gene therapy with the agile allele (A), a male rat was homozygous (aa) for...
Prior to gene therapy with the agile allele (A), a male rat was homozygous (aa) for the autosomal recessive trait, awkwardness. Following the completion of the gene therapy, this same rat was test- crossed with a female rat of the appropriate genotype. What genotype should the female rat have in order for her to be used in a testcross? The offspring produced in the testcross were as follows: Assuming that the lest cross was performed correctly, what type of gene...
Do male and female college students have the same distribution
of living arrangements? Use a level of significance of 0.05.
Suppose that 101 randomly selected male college students and 51
randomly selected female college students were asked about their
living arrangements: dormitory, apartment, or other. The results
are shown in Table. Do male and female college students have the
same distribution of living arrangements?
Dormitory
Apartment
Other
Male
41
34
26
Female
19
27
5
What is the chi-square test-statistic...
A cross has been set up between a true breeding tall plant producing white flowers and a true breeding short plant producing red flowers. One can be certain that this type of a cross: will result in a 3 red: 1 white ratio will result in all red F_1 flowers cannot produce progeny because the parental phenotypes are different from one another is a monohybrid cross is a dihybrid cross In humans, free earlobes (E) are dominant to attached earlobes...
1.) Explain why linkage measurements are more accurate for two genes that are close together than two genes that are farther apart. 2.) A female poodle with green eyes (recessive) and yellow spots on her tongue (recessive) was bred with a male poodle who was the wild-type phenotype but hybrid genotype for those same two traits. In a series of litters, this breeding pair gave birth to the following 85 puppies: 39 Normal eyes, normal tongue 36 Green eyes, yellow-spot...
Prior to gene therapy with the agile allele (A), a male rat was homozygous (aa) for the autosomal recessive trait, awkwardness. Following the completion of the gene therapy, this same rat was test- crossed with a female rat of the appropriate genotype. What genotype should the female rat have in order for her to be used in a testcross? The offspring produced in the testcross were as follows: Assuming that the lest cross was performed correctly, what type of gene...
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