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dalvyx [7]
3 years ago
11

In Drosophila, the gene for red eyes, R is dominant to the allele for white eyes , r. This is sex-linked . Determine the possibl

e genotype and phenotype ratios expected from a cross between:

Biology
2 answers:
Paha777 [63]3 years ago
7 0
Nwnemwmeeleosi. Mememek
miv72 [106K]3 years ago
6 0

Answer:

B) XRxr XrY

XRXr,XRY,XrXr,XrY

Genotype ratio:1:1:1:1

Phenotype ratio: 2:2 50% white, 50% red

C) XRXR, XrY

XRXr,XRY,XRXr,XRY

Genotype: 2:2

Phenotype: 100% white

D) XRXR,XRY

XRXR,XRXR,XRY,XRY

Genotype: 2:2

Phenotype: 100% white

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Long legs (L) in racing horses is dominant to short legs (l). Good muscle tone (G) is dominant to weak muscle tone (g). Determin
vova2212 [387]

Answer:

See the answer below

Explanation:

Long leg (L) is dominant over short leg (l) and Good muscles (G) is dominant over weak muscles (g).

Heterozygous long leg, weak muscle = Llgg

Heterozygous long leg, strong muscle = LlGg

       Llgg    x    LlGg

Offspring:

2 LLGg - Long leg, strong muscle

4 LlGg -  Long leg, strong muscle

2 LLgg - Long leg, weak muscle

4 Llgg - long leg, weak muscle

2 llGg - short leg, strong muscle

2 llgg - short leg, weak muscle

Ratio of offspring with long leg and strong muscle = 6/16 or 3/8

Ratio of offspring with long leg and weak muscle = 6/16 or 3/8

Ratio of offspring with short leg and strong muscle = 2/16 or 1/8

Ratio of offspring with short leg and weak muscle = 2/16 or 1/8

5 0
2 years ago
Select all that apply.
Klio2033 [76]
The lysosomes<span> are the animal cell's "garbage disposal", while in plant cells the same function takes place in </span>vacuoles<span>. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells.</span>
3 0
3 years ago
Read 2 more answers
With the exception of the 12 cranial nerves, other major nerves exit the brain through the:
Oksana_A [137]
I think the answer should be medulla oblongata or foramen magnum.

The major nerves that leave brain should form a thick cord in the brain stem that called medulla oblongata. Medulla oblongata will pass a big hole in the base of the skull that called foramen magnum. Depends on what part the question asked(bone or tissue), it probably between those two options.
3 0
2 years ago
DNA replication is the process by which DNA is copied during the cell cycle. True or False.
seraphim [82]
The statement is true. DNA replication process happen during the cell cycle.
5 0
3 years ago
How do some nucleotide sequences in DNA get copied into RNA when DNA and RNA have different bases. For example, how is the seque
kvasek [131]

Answer:

In RNA the base thymine is essencially replaced by the base uracil. So the sequence TGAC in DNA would get copied into RNA as ACUG.

Adenine pairs with uracil in RNA like it pairs with thymine in DNA

Explanation:

8 0
3 years ago
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