Which group of animals has a closed circulatory system featuring a single circuit and two heart chambers?

What do you mean by the term,' Weed'?

Evgesh-ka [11]

Answer:

weed means which feed on plants and takes nutrients from them weed also stops the growth of plant

so we have to uproot weed

8 0

3 years ago

The ABO blood group assorts independently of the Rhesus (Rh) blood group and the MN blood group. Three alleles, IA , IB , and i,

Eva8 [605]

Answer:

Part 1:

The mother’s genotype is ii, rr, MN

The father’s genotype is IAIA/IAi, Rr, MM

Part 2:

Approximately 1/32 (3.125%) of children can be expected to have the stated blood types.

Explanation:

Part 1:

The mother has blood types 0, Rh- and MN. Therefore, her genotype has to be ii, rr, MN.

The father has ABO type A. His ABO genotype may therefore be either IAIA or IAi, as both are compatible with type A offspring with a type 0 mother. His Rh genotype must be rr, since his Rh- child necessarily has to have inherited one r allele from each parent. Finally, his MN genotype has to be MM since both alleles are codominant.

Part 2:

Using the given data, we build the following Punnett chart:

IA R N IA r N i R N i r N

IA R M

IA R N

IA r M

IA r N

IB R M

IB R N

IB r M X

IB r N

Note that, of all 32 possible combinations, only a single one of them (marked with “X” produces a genotype which matches the desired blood type, as follows:

genotype: IBi, rr, MN

blood type: B, Rh-, MN

3 0

3 years ago

What accounts for genetic biodiversity existing in modern multicellular organisms?

EastWind [94]

DNA mutations that actually originate in the gametes is mainly responsible for genetic biodiversity existing in modern organisms. The term biodiversity actually refers to the variety as well as variability of life that is found on the planet earth. his variety can be seen between species, the ecosystem and within the species.

8 0

3 years ago

Studies show that many older adults who die by suicide visited a physician within ________ before death.. . A. One month. . B. 6

vovangra [49]

75 percent of the older adults who die by suicide visited a physician within a month before death. It is recommended to visit the physician often when depression is experienced to help understand the feeling and could come up with a resolution to this grave problem. Answer is A.

6 0

3 years ago

Plants with specialized tissues that can transport fluids

Serhud [2]

The answer is vascular plants.

Vascular plants have specialized tissues that can transport fluids - vascular tissue. This tissue consists of xylem and phloem. Xylem transports water and minerals from the root to the upper parts of the plant. Phloem transports food and nutrients from the leaves, where they are produced, to the growing or storage parts of the plants.

6 0

3 years ago