BIOL 1406 Chapter Notes -Reciprocal Cross, Gamete, Tyrosinase

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kleemz22

11 May 2022

School

LCC

Department

BIOL - Biology

Course

BIOL 1406

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Document Summary

Josef koleverter, 1st to investigate cross-fertilization, tobacco, and obtained fertile offspring. True breeding: offspring produced from self-fertilization remained uniform from generation-to-generation. Segregating: process that alt forms of traits are expressed in offspring than blending each trait of the parents. * mendel was the 1st to quantify the results of his crosses (pea dude)* Peas are small and gross easily, male & female sex organs (self-fertilization) pure kinds, easy to observe. He did made sure the peas were pure, reciprocal cross, lastly he let them self-fertilize. First filial generation (f1): offspring from a cross between a parental generation. Alleles: the different forms of the same gene. 1 out of 2+ alternative states of a gene. F2 in medel"s experiment showed a 3:1 ration (actually 1:2:1 ratio) Parents don"t transmit physiological traits to offspring (only genes) Each gets 1 copy of each gene from each parent. Not all copies of a gene are identical.

Related Questions

6. A true-breeding, purple-flowered, yellow pea plant (PPYY) is crossed to a white-flowered, green pea plant (ppyy). A. Write out the parental cross.

B. What gametes can be produced by each parent?

C. What is the genotype of the F1 generation? What is the Phenotype?

D. What are the possible gametes that can be produced from each plant F1 plant?

E. An F1 plant is allowed to self fertilize (F1 X F1). Draw a Punnet square to show the possible genotypes of the offspring in the F2 generation.

F. What phenotypes are possible in the F2 generation? What is the probability of getting each of the phenotypes in the F2 generation?

cerisehare457

A heterozygous pea plant that is tall with yellow seeds, TtYy, isallowed to self-fertilize. Gametes produced?
Cross over is the physical exchange of chromosome pieces. Crossover occurs during which of the following events?

A. Mitosis
B. Meiosis I
C. Meiosis II
D. Both Mitosis and Meiosis I
E. Both Mitosis and Meiosis II

Which of the following statement about double fertilization iscorrect?

A. It occurs in higher plants
B. In double fertilization, one sperm fertilizes the egg, a secondsperm unites with polar cell to produce the endosperm
C. Double fertilization ensures that the endosperm (which uses alarge amount of plant resources) will develop only when an egg cellhas been fertilized
D. all of the above statement is correct
E. All the above statement is incorrect

A true breeding line of green pod pea plants is crossed with atrue-breeding line of yellow pod plants. All of their offspringhave green pods. From this information it can be stated that thegreen color is _____ to the yellow color.
recessive
dominant
subservient
Blended

In a dihybrid cross using Mendelian inheritance, if both parentsare heterozygous for both traits, what will be the phenotypic ratioof their offspring?
3 : 1
1 : 2 : 1
1 : 1
9 : 3 : 3 : 1

The genetic composition of an individual is called its_____________.
phenotype
Genotype

The sex of fruit fly with two XX chromosome and four sets ofautosome will be
Male
Female

In close comparison, external fertilization often yields more offspring than internal fertilization. However, identify one advantage of internal fertilization over external fertilization.

BIOL 1406 Chapter Notes -Reciprocal Cross, Gamete, Tyrosinase

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