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3 years ago

I need help with the image (phenotypes and genotypes).

Biology

1 answer:

Flauer [41]3 years ago

5 0

Answer:

See the answer below

Explanation:

1. Only one phenotype is present in the F1 generation offspring. Since tallness was dominant over shortness, all the offspring in the F1 generation appeared tall.

2. Two phenotypes are present in the F2 generation - 9 tall and 3 short. The short trait reappeared at the F2 generation.

3. The genotype of the F1 offspring would be heterozygous. Assuming the purebred tall is AA and the purebred short is aa:

AA x aa

Aa Aa Aa Aa

All the F1 offspring will appear tall and their genotypes would be heterozygous.

4. Assuming that the allele for height is denoted with A (a), the genotype of the purebred tall plant would be AA.

5. In a similia vein, the genotype of the purebred short plant would be aa.

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life cycles of sexually producing organisms involve the alternation of haploid and diploid stages true/false

kolbaska11 [484]

Answer:

True

Explanation:

The life cycles of sexually producing organisms generally involve alternation between the haploid and diploid generations.

Sexual reproduction involves the fusion of gametes - fertilization. The gametes are haploid (n) and are usually formed by the reductional division (meiosis) of diploid (2n) sex cells.

Haploid gametes represent the haploid stage of the life cycles of sexually reproducing organisms. During fertilization, the male and female gametes fuse together to form a diploid zygote. The zygote then continues to divide equationally (mitosis) and differentiates to give rise to a baby and eventually to either male or female adult organism.

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3 years ago

What is sensorineural?

Tanzania [10]

(of hearing loss) caused by a lesion or disease of the inner ear or the auditory nerve.

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3 years ago

What information would be most relevant to determining the time of death?

Nuetrik [128]

Lividity can be defined as the typical bluish-purple discoloration of the skin after death. Rigor mortis can be defined as the postmortem state in which the muscles become stiff.

After death, the stomach contains identifiable ingested foods within two hours.

Rigor mortis is characterized by the stiffening of the body after death, which is caused by the absence of ATP in muscle tissues.

Postmortem lividity or livor mortis is caused by the accumulation of blood in blood vessels (the lack of arterial pressure) as a result of gravity.

The most relevant information to determine the time of death is the presence of lividity, rigor mortis, and/or stomach contents (Option c).

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3 years ago

What is the definition of meteor

topjm [15]

Answer: a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.

Explanation:

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3 years ago

In poultry, black is dominant to white, but the heterozygote is blue. If you consistently

balu736 [363]

Answer:

indeterminate

Explanation:

The answer would be an indeterminate number of generations.

The blue trait is a heterozygous trait. In other words, the blue allele does not really exist. Two different alleles team up to produce the trait, whereas, only two the same allelic conditions can produce a true-breeding flock.

Hence, it will take an indeterminate number of generations to produce a true-breeding flock of the Blue Andalusions.

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3 years ago