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Alexeev081 [22]
3 years ago
5

Please help with this

Biology
2 answers:
aalyn [17]3 years ago
8 0

47:51 is almost 1:1 so the plant w/ red flower must be Rr n the white one rr.

ans is A.


Talja [164]3 years ago
7 0

The answer is A because the parent plants must be Rr and rr to allow a parent with red flower and also have offspring with white flowers.

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Which of these is a part of the process of speciation?
Rashid [163]

Answer:

d

Explanation:

Speciation is the formation of new species as a result of evolution these three stages are separation, adaptation, and reproductive isolation. First Stage: Separation. Speciation usually begins when a part of a population becomes separated from the rest of their species.

d

5 0
3 years ago
Imagine that a newly discovered, recessively inherited disease is expressed only in individuals with type O blood, although the
erastova [34]

Complete question:

Imagine that a newly discovered, recessively inherited disease is expressed only in individuals with type O blood, although the disease and blood group are independently inherited.

A normal man with type A blood and a normal woman with type B blood have already had one child with the disease. The woman is now pregnant for a second time.

Assuming that both parents are heterozygous for the gene that causes the disease, what is the probability that the second child will also have the disease? Express your answer as a fraction using the slash symbol and no spaces (for example, 1/2).

Answer:

The probability that the second child will also have the disease is 1/16.

Explanation:

<u>Available data:</u>

  • Two genes independently inherited: one for blood type, the other for disease
  • Man with type A blood  x  Woman with type B blood
  • Both parents are heterozygous for the gene that causes the disease; Dd

If the man has A blood, and the woman has B blood, and they already have an affected child, this means that they must be heterozygous for blood type too.

Cross:  

Parentals)           AiDd         x      BiDd

Gametes)  AD  Ad  iD  id       BD  Bd  iD  id

Punnett square)      AD       Ad       iD       id

                     BD   ABDD  ABDd  BiDD BiDd

                     Bd   ABDd   ABdd   BiDd Bidd

                     iD    AiDD    AiDd    iiDD   iiDd

                     id    AiDd     Aidd     iiDd    iidd

F1) <u>Genotype</u>:

1/16 ABDD

2/16 ABDd

1/16 ABdd

1/16 AiDD

1/16 BiDD

2/16 AiDd

2/16 BiDd

1/16 Aidd

1/16 Bidd

1/16 iiDD

2/16 iiDd

1/16 iidd

<u>Phenotype:</u>

3/16 A/B normal

4/16 A normal

4/16 B normal

3/16 0 normal

1/16 0 affected by the disease.

3 0
3 years ago
During transcription from DNA to RNA, which base occurs only in RNA?
Step2247 [10]
A is the answer hope i helped
4 0
3 years ago
What do the spores that plants produce develop into? A. gametophytes. B. fertilization. C. zygotes. or D. sporophytes.
musickatia [10]
Answer:
The life cycle of plants is composed of sporophye generation and gemetophyte generation. They show alternation of generation in which gametophytr produce gametes that develop into sporophytic plant. Sporophye produce spores that develop into gametophyte plants.

Example:
Bryophytes, pinus etc
7 0
3 years ago
Micronutrients are needed for _____.
IrinaK [193]
I think the answer is A
Hope this helps have a good night!
4 0
3 years ago
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