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Inessa [10]
3 years ago
13

Imagine that individuals with a certain allele (B) have much greater reproductive success than those without the allele. However

, individuals with the B allele also have shorter life spans than those without the allele. How would you predict the allele frequencies in the population will change through subsequent generations
Biology
1 answer:
Sonbull [250]3 years ago
6 0
<h2>Allelic frequency </h2>

Explanation:

The B allele will become more common only if the individuals reach reproductive ages

Since the individuals with allele B have much greater reproductive success therefore once they reach the reproductive age, success to reproduce new individuals will be higher

The offsprings will carry on the allele(B allele) and pass on to the next generation

Even if the parental individuals die because of shorter life span the offsprings produced in each generation will pass on the allele to their subsequent generation  

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Use the punnett squares below to model each parent combination after filling in each Punnett square predict then percentages of
Oduvanchick [21]

The provided question is incomplete as it lacks the combinations of parent as metion in the question, however the complete question is attached as the image.

Answer:

There are two parent combinations that are :

1. heterozygous black Ff cross with heterozygous black Ff

2. heterozygous black Ff cross with white ff

Explanation:

1. in first combination the each parent will produce F and f gametes, as it is shown as Capital F so it will be dominant over f as per the rule. so the cross can be shown as :

    F      f

F  FF    Ff

f  Ff     ff

where, FF are black Ff black and ff white offspring. As there is clearly 3 black offspring over one white spring so the ratio is 3:1 or 75% chances of black and 25% chances of white offspring (phenotype).

2. in second combination there would be F and f gametes for black parent and f and f for white parent, thus the offsprig would be :

    F     f

f   Ff    ff

f   Ff    ff

As, there is two black and two white springs are produced than the ratio would be 2:2 or 50% chances of each white offspring and black offspring (phenotype)

4 0
3 years ago
Why are plants unable to grow at the bottom of lakes?
Tpy6a [65]

Answer:

Sunlight does not reach the bottom.

Explanation:

It honestly depends on how deep, Coral is more suited for shallow waters, where sunlight reaches.

5 0
3 years ago
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The fundamental mendelian process that involves the separation of contrasting genetic elements at the same locus is called _____
harkovskaia [24]
Segregation. The Principle of Segregation describes how pairs of gene variants are separated into reproductive cells. <span>The segregation of gene variants, called alleles, and their corresponding traits was first observed by Gregor Mendel in 1865. Mendel was studying genetics by performing mating crosses in pea plants. He crossed two heterozygous pea plants, which means that each plant had two different alleles at a particular genetic position. He discovered that the traits in the offspring of his crosses did not always match the traits in the parental plants. This meant that the pair of alleles encoding the traits in each parental plant had separated or segregated from one another during the formation of the reproductive cells. From his data, Mendel formulated the Principle of Segregation. We now know that the segregation of genes occurs during meiosis in eukaryotes, which is a process that produces reproductive cells called gametes.</span>
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Ad libitum [116K]

Answer:

Explanation:

Staining is done for onion cells to visualize the cytoplasm of yellow and white onions because they are not pigmented. The staining of human cheek cells with methylene blue is necessary to stain the nucleus to get clear image of it under microscope because methylene blue binds to negative charge nucleic acids  

While for leaf epidermal cells smears, staining is not necessary as they are visible under light microscope without staining and they also have pigmented materials inside them such as chlorophyll chloroplast.  The cork cell is a non-living and have a cell wall whose structure is visible under light microscope.  

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Answer:

A

Explanation:

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