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3 years ago

An allotrope of carbon called buckminsterfullerene has the shape of _____.

Biology

1 answer:

DaniilM [7]3 years ago

6 0

Answer: D) a hollow soccer ball

Explanation:

Carbon is capable of forming many structurally different forms of the same element due to its valency. These forms are called allotropes. One of these is the buckminsterfullerene. It has a cage-like fused-ring structure made of twenty hexagons and twelve pentagons. If you look at this structure, it resembles a soccer ball.

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In a plant, leaf color and leaf shape are controlled by two linked genes Leaves of the wild-type plant are red. A recessive muta

Brrunno [24]

Solution :

Red is dominant over the white leaves and pointed is dominant over smooth.

Red = R , white = r

Pointed = P , smooth = p

Red, pointed x white,smooth ------ Parents

RRPP rrpp

RP rp ----------------- Gametes

RrPp -------- $F_1$

(red, pointed)

When this $F_1$ is test crossed,

RrPp x rrpp ---- $F_1$ test cross

Gametes → rp

RP ---------- RrPp - red, pointed - 36 parental type

Rp ---------- Rprp - red, smooth - 14 re- combination

rP ----------- rrPp - white pointed - 10 re- combination

rp ----------- rrpp - white, smooth - 40 - parental type

Total = 100

As this ratio is deviating from 1:1:1:1, it indicated the two genes are linked.

Linkage strength = percentage of crossing over = map distance between the genes.

Percentage crossing = recombination frequency = percentage of recombination.

Recombination frequency $=\frac{\text{total no. of recombination}}{\text{total no. of progeny}}\times 100$

$=\frac{14+10}{100} \times 100$

= 24 %

= 24 map units

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3 years ago

bulgar [2K]

Answer:

The hemoglobin of horse has 60% lower than the human's hemoglobin

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3 years ago

What statement best explains why meiosis produces haploid cell rather than diploid cells

Shkiper50 [21]

The right answer is Haploid cells join to form an organism that has a complete set of chromosomes.

Meiosis makes it possible to pass from a cell to 2n chromosomes to 4 cells with n chromosomes, thus ensuring the passage from the diploid phase to the haploid phase.

So from the fertilization phase to the meiosis phase, the cells will be diploid (2n chromosomes). From the meiosis phase to the fertilization phase, it is the haploid phase (n chromosome).

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Yakvenalex [24]

Answer:

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Explanation:

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