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DiKsa [7]
2 years ago
15

The heart of an embryo starts to pump blood by the ________.

Biology
2 answers:
astra-53 [7]2 years ago
6 0
Emerging from the placenta is the umbilical vein, which carries oxygen-rich blood from the mother to the fetal inferior vena cava via the ductus venosus to the heart that pumps it into fetal circulation.
melamori03 [73]2 years ago
5 0

Answer:

fourth week of pregnancy

Explanation:

Mark me brainly please

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An organism possesses one copy of each allele type for a given gene. It is said to be __________.
Sveta_85 [38]

Answer:

Heterozygous for the gene

Explanation:

Alleles are the possible alternative forms of a gene. An organism having two identical alleles of a gene is said to be homozygous for that gene. On the other hand, an organism having two dissimilar alleles for a gene is heterozygous for that gene.

For example, let's suppose that I^A and I^B are the two alleles for ABO blood type in humans. Here, an individual with one copy of I^A and one copy of I^B would be heterozygous for ABO blood type. On the other hand, genotypes I^AI^A and I^BI^B are homozygous for the ABO blood type gene.

7 0
3 years ago
Which affect is one likely result of a forest fire
Luda [366]
One affect could be a loss of habitat for the animals that lived in that forest
6 0
3 years ago
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The ability of an organism to make a copy of itself is called
vovikov84 [41]
The ability of an organism to make a copy of itself is called Reproduction
6 0
3 years ago
In bullous pemphigoid the blisters result from a separation between the
Viefleur [7K]

Answer:

C

Explanation:

In BP, an autoantibody binds to a component of the skin that holds the dermis and epidermis together, causing separation of these two layers, thus forming a blister.

Hope this helps!! Brainliest?? Anyways have a great day!! :))

5 0
3 years ago
Which of the following has a climate most conducive to slow soil formation? (4 points)
ollegr [7]
The climate that has slown down soil formation is TEXAS. california is not low on soil since they grow oranges. so yeah thats the answer
3 0
3 years ago
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