What do you call the reproduction in plants where the male and female parts of the flowers of the plants are involved?

The law of segregation states that allele pairs separate during gamete formation. How then do we have two alleles for a trait?

Ivahew [28]

It’s not so much that the alleles separate but more so that only one of the parental alleles is passed on. Let’s look at a monohybrid trait to make this easier to comprehend, and let’s say the trait is eye color. One of the parents has blue eyes, a recessive eye color, meaning both of their alleles for that trait are recessive. However, the other parent has brown eyes, a dominant eye color, meaning this parent could either possess one dominant allele that hides the recessive blue (let’s just limit it to two colors to avoid confusion) or they could have two dominant alleles. When gametes are formed, they consist of a combo of alleles, one maternal and one paternal. Meaning, in the case of the heterozygous dominant parent (or the parent with one dominant and one recessive allele) they could either pass on their dominant allele, giving the child brown eyes, or their recessive allele, giving the child blue eyes because they can only ever inherit the recessive trait from the other parent. The law of segregation essentially says that a parent cannot clone itself and create a child in its exact image but rather that the child would inherit one trait from each parent. This is why the child has two alleles for the trait and the parents both have two alleles for this trait. Hope this helps (:

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3 years ago

In the table below, fill in the missing cause and effect of two examples of competition in a community.

marissa [1.9K]

Answer: Effect - The lions will move to different place to eat. Cause - The population of female hyenas is a lot less then male hyenas

Explanation:

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3 years ago

Which statement about global warming is true?

dimulka [17.4K]

D, All of the above.

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3 years ago

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 The process in which the DNA from one type of cell causes an inheritable change in a second type of cell is called

frosja888 [35]

Answer:

bacteriophages

Explanation:

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3 years ago

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Populations evolve for many reasons. Suppose there is a small population of birds that have either brown chest feathers or yello

creativ13 [48]

Answer/Explanation:

A. Birds with yellow chest feathers attract more mates and leave more offspring.

Mechanism: The mechanism that is involved in this event is imply that of natural selection. In this event, birds with yellow chest feathers have a greater fitness they attract more mates and leave behind more offspring, as they are selected for by natural selection.

Effect on the gene pool: Since birds of yellow chest feathers have greater fitness, the frequency of yellow feather birds would increase, since more offspring with yellow chest feathers would be produced more than the other bird having the other feather color.

B. A hurricane kills many birds at random.

Mechanism: The mechanism that occurs in this event is simply that of genetic drift. Here, a random change has occurred, which can simply be referred to as the bottle neck effect. Following the disaster, the population size of the bird reduces thereby increasing the chance of allele frequency of the population to change. Genetic drift is occurs more in a small population.

Effect on the gene pool: Allele frequency would change, but not predictably. In other words, since individuals left are chosen by random, and no real idea of which traits would have the highest fitness after the event, we cannot really tell which the pattern of change the allele frequency would take, but we are certain there would be a change in allele frequency.

C. A conservation group releases several new birds to the area, to repopulate the birds. The new birds are predominantly brown feathered.

Mechanism: This event can be described as gene flow, as new members with mostly brown feather are introduced into the population which would eventually bring a change in the gene pool.

Effect on the gene pool: The frequency of brown feather allele will increase. Bearing in mind that the allele frequency of brown feather allele and yellow feather allele is approximately equal, an introduction of new set of birds having mostly brown feathers would definitely bring about a change in the gene pool, leading to more brown feather allele. Hence, frequency of brown feather allele will increase.

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3 years ago