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3 years ago

In some organisms unfertilized eggs become adults. what will their chromosome count be

1 answer:

4 0

The process of development of adults from the unfertilized egg is known as parthenogenesis. Parthenogenesis occurs in insects such as bees, wasps and bumble bees. Normally, males are produced in these insects. The individuals develop from unfertilized eggs and contain the single (haploid) set of chromosome.

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A researcher claims that the epinephrine signaling pathway controls a catabolic process in muscle cells

denis-greek [22]

Answer:

Glycogen phosphorylase catalyzes the conversion of glycogen to glucose-1-phosphate.

Explanation:

Glycogen phosphorylase catalyzes glucose-1-phosphate release by phosphorolysis from the terminal residue of a non-reducing end of a glycogen branch. A molecule of inorganic phosphate attacks the C1 side of a α(14) glycosidic bond, leaving in the glycogen polymer a hydroxyl group on C4.

7 0

3 years ago

Consider a cross between a plant with two flower colors, yellow and red. Yellow (Y) exhibits complete dominance over red (y). It

Aneli [31]

Answer:

1) option a is correct. (260+270)/1545

(Note about this option: In the statement, it is written as (260+270) 1545. Lacks the division symbol, / )

2) From these results one can conclude that the two genes are linked (option a)

Explanation:

To know if two genes are linked, we must observe the progeny distribution. If heterozygous individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. If we observe a different distribution, phenotypes appearing in different proportions, we can assume linked genes in the double heterozygote parent.

We might verify which are the recombinant gametes produced by the di-hybrid, and we will be able to recognize them by looking at the phenotypes with lower frequencies in the progeny. Phenotypes with the highest frequencies represent the parental gametes.

To calculate the recombination frequency, we will use the following formula: P = Recombinant number / Total of individuals.

In the present example:

Parental) YySs x yyss

Gametes) YS parental type ys, ys, ys, ys

ys parental type

Ys recombinant type

yS recombinante type

The total number of individuals in the offspring: 1545

Phenotypic class Number of offspring

500 Y-S- (parental)
515 yyss (parental)
260 Y-ss (recombinant)
270 yyS- (recombinant)

According to this information, the phenotypic frequencies of the progeny differ from the phenotypic ratio 1:1:1:1. We can assume then, that these genes are linked.

The recombination frequency is:

P = Recombinant number / Total of individuals

P = 260 + 270 / 1545

P = 530/1545

P = 0.343

The genetic distance between genes is 0.343 x 100= 34.4 MU.

6 0

3 years ago

A hurricane can form when a large air mass develops over a tropical ocean and causes rising air to move in a circular motion. Wh

Mamont248 [21]

It’s definitely D. Warm and humid

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3 years ago

The range of electromagnetic energy emitted by the sun, known as the solar spectrum, is found mostly in three regions of the ele

Sindrei [870]

Answer:

All of the energy released from the Sun, which is confronted by our planet earth is in the form of solar spectrum or comes inside that range of energy describe as solar energy.

Explanation:

The sun is present at the center of the solar system providing the optimum level of energy to all the celestial entities inside our solar system to keep a level of energy for its survival and sustaining a balance of heat inside its environment. As, our planet earth is too comes in path of the energy released by the red giant and thus we confront the all the electromagnetic energy released by sun in the solar spectrum range.

As, all of the electromagnetic energy released from the sun is comprised inside the solar spectrum range.While, the different ranges of solar spectrum exists which are well evaluated as the x-rays, UV rays etc.

6 0

3 years ago

Read 2 more answers

Which continent is located southeast of the Indian Ocean?

tresset_1 [31]

Answer:

Australia and Antarctica. Antarctica would be more south.

Explanation:

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3 years ago