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Lemur [1.5K]
3 years ago
10

Free Points...

Biology
2 answers:
Law Incorporation [45]3 years ago
8 0

Answer:

Cyanobacteria are aquatic and photosynthetic, that is, they live in the water, and can manufacture their own food. Because they are bacteria, they are quite small and usually unicellular, though they often grow in colonies large enough to see. They have the distinction of being the oldest known fossils, more than 3.5 billion years old, in fact! It may surprise you then to know that the cyanobacteria are still around; they are one of the largest and most important groups of bacteria on earth.

wlad13 [49]3 years ago
6 0

Answer:

Cyanobacteria are aquatic and photosynthetic, that is, they live in the water, and can manufacture their own food. Because they are bacteria, they are quite small and usually unicellular, though they often grow in colonies large enough to see. They have the distinction of being the oldest known fossils, more than 3.5 billion years old, in fact! It may surprise you then to know that the cyanobacteria are still around; they are one of the largest and most important groups of bacteria on earth.

Explanation:

It looked right

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Ralph has type B blood and his wife Rachel has type A blood. They are very shocked to hear that their baby has type O blood, and
Cerrena [4.2K]

Answer:

1. The parents genotypes could have been BO and AO

2. wire-hair

Explanation:

There are four possible blood types which are type A, B, AB, O. blood group is the classification of blood based on the presence or the absence of inherited antigenic substances on the surface of the red blood cells. They have hereditary basis and also rely on a series of alternative genes sometimes used in solving dispute of parental heritage. With the four possible blood groups, there are six possible genotypes and these are:

Blood type               possible genotypes

Type A                         AA, AO

Type B                         BB, BO

Type AB                           AB

Type O                              OO

Thus, for parents with blood type B and A to give birth to a child with blood type O, it means their genotype could have been both BO and AO  for them to be able to produce a child with OO. a cross between these two could give rise to OO.

Question 2

Wire hair is dominant (S) to smooth (s), thus wire hair could be in the homozygous (SS) and heterozygous form (Ss) and the smooth hair can only be expressed in the homozygous recessive form (ss).

thus, in a cross between homozygous wire haired and smooth haired, we will have:

homozygous wire haired            homozygous smooth haired

P gen              SS                x               ss

F1 gen.                                Ss

phenotype:                     wire haired

8 0
3 years ago
A gene for eye color is located very close to a gene for coat color in a certain organism. How likely is it that a crossover wil
GaryK [48]
The answer is 'least likely'.
7 0
3 years ago
¿Qué sucedería si por una epidemia desaparecieran las golondrinas marinas?
tamaranim1 [39]

Answer:

27-May-2019 · 1 answer

ludys88 está esperando tu ayuda. Añade tu respuesta y gana puntos. Respuesta. 4.4/5. 52. ke7vi. Aspirante. 8 respuestas. 614 personas ayudadas. Respuesta: aumentarían las 

3 0
2 years ago
Which tube-like organelle comes in smooth and rough varieties?
EleoNora [17]
<span> Endoplasmic Reticula should be the answer but if it is not my apologies </span>
5 0
3 years ago
Read 2 more answers
Do pollen grains have the same number of chromosomes as a regular plant cell?
finlep [7]

The pollen grain is actually the male gametophyte generation of seed plants. Inside the anther, pollen mother cells divide by meiosis to form pollen grains whose nuclei contain half the number of chromosomes characteristic of the parent plant. 

(hope that helped answer the question)

8 0
3 years ago
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