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svetlana [45]
3 years ago
13

When cells were first taken from henrietta lacks, she was _____. when cells were first taken from henrietta lacks, she was _____

. in high school suffering from cervical cancer already dead only two years old?
Biology
1 answer:
kirill [66]3 years ago
4 0
She was suffering from cervical cancer when cells were first taken from henrietta lacks. While she was being treated for cancer many years ago her cells were taken and have been cultured in the laboratory ever since. She was never communicated that her cells were being taken and neither she nor her family has stood recompensed.
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Gregor Mendel crossed true-breeding plants with green pea pods with true-breeding plants with yellow pea pods. The resulting F1
Alchen [17]

Answer:

A. Mendel observed green and yellow pea pods in a 3:1 ratio because the F1 generation was heterozygous.

Explanation:

The two true breeding plants in the parental population were homozygous (that is what true breeding means). Therefore, their cross would lead to all heterozygous offspring (see attached punnet square). Green is the dominant characteristic, so all F1 plants had a green phenotype, but Gg genotype.

The F1 cross would therefore be Gg x Gg. See attached punnet square.

The genotypes in the F2 generation are 1 GG: 2 Gg: 1 gg 1

Therefore, the phenotypic ratio is 3 green pea pods (Gg or GG): 1 yellow (gg)

Download pdf
4 0
3 years ago
Which class of mollusks contain octopi and squids?<br> Anthozoa<br> Gastropoda<br> Cephalopoda
bija089 [108]

Answer:

Cephalopods

Explanation:

Cephalopods are a group of molluscs that include the pearly chambered Nautilus, squids, and the octopus. They can be divided into three categories: the Nautiloidea (chambered Nautilus), the Ammonoidea (the extinct ammonites), and the Dibranchiata (squids, the extinct belemnites, and octopuses).

8 0
2 years ago
a horse has 64 chromosomes and a donkey has 62, using your knowledge of meiosis explain why a cross between these animals produc
Pani-rosa [81]
The horse will give 32 chromosomes and donkey will give 31 chromosomes to the offspring.
The offspring has 63 in total.
 It is odd so it can not produce normal germ cell. So it is sterile.

3 0
3 years ago
Describe what happens to water particles when ice metls.
leva [86]

Answer:Ice melts when heat energy causes the molecules to move faster, breaking the hydrogen bonds between molecules to form liquid water. In the melting process, the water molecules actually absorb energy.

Explanation:

7 0
3 years ago
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How much natural gas is used in the United States each year? How does this compare with oil and coal use?
kap26 [50]

Answer:In 2019, the United States consumed about 31.01 trillion cubic feet (Tcf) of natural gas.

Explanation:

3 0
3 years ago
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