BIOLOGY HIGH SCHOOL

Several features of Gregor Mendel's experiments on plant breeding and patterns of inheritance distinguished his work from that of his contemporaries. Which of the following was a critical experimental innovation employed by Mendel that distinguished his experiments from those of his contemporaries?A. Mendel used self-fertilizing wild strains in his experiments.B. Mendel restricted his observations to the first-generation progeny from his crosses. C. Mendel performed controlled crosses with pure-breeding strains. D. Mendel used strains that displayed a broad range of phenotypes for each trait.

Answers

Answer 1
Answer:

The correct answer is: C.

Explanation:

  • Gregor Mendel identified the manner in which different traits are transferred from the parents to their offspring.
  • He explained the three Laws which determines the pattern of inheritance by examining the some traits of pea plant in the parental and offspring generation.
  • The traits includes, seed colour seed shape, pod colour, etc.
  • The parent pea plants which Mendel experimented with belonged to the pure-breeding strains.
  • This means that the parent pea plants were homozygous (either dominant or recessive) and not heterozygous for the different traits which Mendel observed.
  • This is why Mendel could determine the pattern of inheritance of the traits in different generations of the offspring.
  • The three laws of inheritance as explained by Mendel were,
  1. The Law of Dominance. It states that in a diploid organism, each trait is controlled by two contrasting variants of the same gene called Alleles. Among the two variants one can express itself even in the presence of the other variant (heterozygous condition) and is called the Dominant allele. The other variant gets suppressed in the presence of the dominant allele and can express itself only in the homozygous condition. This is the Recessive allele.
  2. The Law of Segregation. It states that different pair of alleles segregate during the formation of gametes and during the process of fertilization they associate with the corresponding allele, obtained from the other parent, randomly.
  3. The Law of Independent Assortment. It states that during gamete formation, alleles of two different genes get randomly sorted in the gametes independent of each other.

Related Questions

Which is an example of hybridization that would increase hybrid vigor?
If the primary germ layers fail to form normally during gastrulation, the embryo could develop misshapen organs. TRUE or FALSE.
In vertebrates, chemical messengers called hormones are secreted by the _____ system. endocrine excretory hormonal pituitary
hich takes places as a result of double fertilization in an angiosperm? Double fertilization produces a triploid zygote and diploid endosperm. Double fertilization produces a diploid zygote and triploid endosperm. Double fertilization produces a triploid zygote and a triploid endosperm.
Arthropods periodically shed and discard their exoskeletons as they grow in a process calleda. segmentation. b. molting. c. reproduction. d. metamorphosis.

Lack of ______ has been linked to increased risk for autoimmune diseases. zinc iron vitamin C vitamin D

Answers

Lack of vitamin D has been linked to increased risk for autoimmune diseases.
Hope that helped you.

Which is an abiotic factor of a marine ecosystem

Answers

The water temperature, the speed of currents, the oxygen content, pollution, ect.
The factors that affect aquatic ecosystems is the rate of water flow, salinity, acidity, oxygen, light levels, depth, and temperature.

What’s the answer to this??

Answers


I think it’s 12 but i’m not 100% sure.
Yeah I’m pretty sure it’s 12! Because blah blah

Which principle helps to explain the reason behind why alleles for a single trait separate from each other when gametes are made to ensure that each gamete only carries one allele?a. Incomplete dominance
b. Segregation
c. Dominance
d. Independent assortment 9. If a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water?
a. Water will move in and out of the cell at the same rate.
b. Water will move into the cell, causing it to swell.
c. Water will move out of the cell, causing it to swell.
d. Water will move out of the cell, causing it to shrivel.

Answers

The correct answer is Segregation

The law of segregation can be defined as the process in which during the process of gamete formation, the alleles (variants of a gene) for each gene gets segregated from one another and each gamete receives a single allele for each gene.

The correct answer is option option(d)

Osmosis refers to the passive movement of water from the region of lower solute concentration to the region of higher solute concentration through a semi-permeable membrane.

Name two ways that phytoplankton is important to other organisms.

Answers

Phytoplankton are some of the smallest and most plentiful organisms on planet Earth; they are important to the health and well-being of many life forms in a variety of ways. The collapse of the world's phytoplankton population would have dire consequences for our environment and civilization.

Whales in the order Mysteceti are larger than whales in order Odontoceti. Which of the following best explains this?whales in order Mysteceti are filter feeders and obtain higher levels of energy by consuming krill, zooplankton, and small fish.
whales in order Mysteceti are toothed and therefore are high level predators and obtain higher levels of energy by consuming large fish, squid, and seals.
whales in order Odontoceti are filter feeders and obtain higher levels of energy by consuming krill, zooplankton, and small fish.
whales in order Odontoceti are toothed and therefore are hi

Answers

The right answer for the question that is being asked and shown above is that: "whales in order Odontoceti are filter feeders and obtain higher levels of energy by consuming krill, zooplankton, and small fish." the statement that best explains this is that whales in order Odontoceti are filter feeders and obtain higher levels of energy by consuming krill, zooplankton, and small fish.
Other Questions
Yeast and truffles are _____ fungi. club sac zygote-forming chytrid imperfect
____ are fungi which obtain nourishment from decaying plants. Saprophytes Spores Hyphae Molds
List two consumers and explain why they are considered consumers
Which type of soil holds the most water? A.siltb. clayc. sandd. loam